HIGH8.4
Уязвимость библиотеки 7z.dll файлового архиватора 7-Zip, позволяющая нарушителю повысить свои привилегии
CVSS 3.xВЫСОКАЯ 8.4
CVSS:3.x/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVSS 2.0ВЫСОКАЯ 7.2
CVSS:2.0/AV:L/AC:L/Au:N/C:C/I:C/A:C
Серьёзность:
Закрытые проблемы (34)
HIGH8.8
Уязвимость компонента анализатора 7z-файлов архиватора 7-Zip, позволяющая нарушителю выполнить произвольный код
CVSS 3.xВЫСОКАЯ 8.8
CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HCVSS 2.0КРИТИЧЕСКАЯ 10.0
CVSS:2.0/AV:N/AC:L/Au:N/C:C/I:C/A:CHIGH7.8
Уязвимость реализации метода сжатия Zstandard архиватора 7-Zip, позволяющая нарушителю выполнить произвольный код
CVSS 3.xВЫСОКАЯ 7.8
CVSS:3.x/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HCVSS 2.0ВЫСОКАЯ 7.2
CVSS:2.0/AV:L/AC:L/Au:N/C:C/I:C/A:CHIGH7.0
Уязвимость механизма защиты Mark-of-the-Web архиватора 7-Zip позволяющая нарушителю выполнить произвольный код в контексте текущего пользователя
CVSS 3.xВЫСОКАЯ 7.0
CVSS:3.x/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:HCVSS 2.0СРЕДНЯЯ 6.2
CVSS:2.0/AV:L/AC:H/Au:N/C:C/I:C/A:CMEDIUM6.2
Уязвимость метода NCompress::NRar5::CDecoder декодера RAR5 архиватора 7-Zip, позволяющая нарушителю вызвать отказ в обслуживании
CVSS 3.xСРЕДНЯЯ 6.2
CVSS:3.x/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVSS 2.0СРЕДНЯЯ 4.9
CVSS:2.0/AV:L/AC:L/Au:N/C:N/I:N/A:CMEDIUM6.2
Уязвимость метода NArchive::NCom::CHandler::GetStream обработчика Compound архиватора 7-Zip, позволяющая нарушителю вызвать отказ в обслуживании
CVSS 3.xСРЕДНЯЯ 6.2
CVSS:3.x/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVSS 2.0СРЕДНЯЯ 4.9
CVSS:2.0/AV:L/AC:L/Au:N/C:N/I:N/A:CLOW3.6
Уязвимость файлового архиватора 7-Zip, связанная с неверным определением символических ссылок перед доступом к файлу, позволяющая нарушителю обойти ограничения безопасности
CVSS 3.xНИЗКАЯ 3.6
CVSS:3.x/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:NCVSS 2.0НИЗКАЯ 2.1
CVSS:2.0/AV:L/AC:L/Au:N/C:N/I:P/A:NHIGH8.8
Уязвимость функции CInStream::GetCuSize() обработчика NTFS архиватора 7-Zip, позволяющая нарушителю выполнить произвольный код или вызвать отказ в обслуживании
CVSS 3.xВЫСОКАЯ 8.8
CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HCVSS 2.0КРИТИЧЕСКАЯ 10.0
CVSS:2.0/AV:N/AC:L/Au:N/C:C/I:C/A:CLOW3.1
Уязвимость функции Parse обработчика образов дисков формата UDF архиватора 7-Zip, позволяющая нарушителю раскрыть защищаемую информацию
CVSS 3.xНИЗКАЯ 3.1
CVSS:3.x/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:NCVSS 2.0НИЗКАЯ 2.6
CVSS:2.0/AV:N/AC:H/Au:N/C:P/I:N/A:NMEDIUM6.5
Уязвимость функции OpenCapsule парсера файлов UEFI capsule архиватора 7-Zip, позволяющая нарушителю раскрыть защищаемую и'нформацию
CVSS 3.xСРЕДНЯЯ 6.5
CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NCVSS 2.0ВЫСОКАЯ 7.8
CVSS:2.0/AV:N/AC:L/Au:N/C:C/I:N/A:NMEDIUM4.2
Уязвимость функции ReadBlock() обработчика файлов SquashFS архиватора 7-Zip, позволяющая нарушителю раскрыть защищаемую информацию или вызвать отказ в обслуживании
CVSS 3.xСРЕДНЯЯ 4.2
CVSS:3.x/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:LCVSS 2.0СРЕДНЯЯ 4.0
CVSS:2.0/AV:N/AC:H/Au:N/C:P/I:N/A:PMEDIUM4.3
Уязвимость функции ParseLibSymbols() архиватора 7-Zip, позволяющая нарушителю раскрыть защищаемую информацию
CVSS 3.xСРЕДНЯЯ 4.3
CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:LCVSS 2.0СРЕДНЯЯ 5.0
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:PMEDIUM4.3
Уязвимость функции ParseDependencyExpression() парсера выражений зависимостей UEFI архиватора 7-Zip, позволяющая нарушителю вызвать отказ в обслуживании
CVSS 3.xСРЕДНЯЯ 4.3
CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:LCVSS 2.0СРЕДНЯЯ 5.0
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:PMEDIUM4.3
Уязвимость функции CHandler::GetSecurity() обработчика WIM-архивов архиватора 7-Zip, позволяющая нарушителю вызвать отказ в обслуживании или раскрыть конфиденциальную информацию
CVSS 3.xСРЕДНЯЯ 4.3
CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:LCVSS 2.0СРЕДНЯЯ 5.0
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:PMEDIUM4.3
Уязвимость функции ReadBlock обработчика файлов SquashFS архиватора 7-Zip, позволяющая нарушителю раскрыть конфиденциальную информацию
CVSS 3.xСРЕДНЯЯ 4.3
CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:LCVSS 2.0СРЕДНЯЯ 5.0
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:PLOW3.3
Уязвимость архиватора 7-Zip, связанная с нарушением механизма защиты данных, позволяющая нарушителю обойти существующие механизмы безопасности и проводить спуфинг-атаки
CVSS 3.xНИЗКАЯ 3.3
CVSS:3.x/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:NCVSS 2.0НИЗКАЯ 2.1
CVSS:2.0/AV:L/AC:L/Au:N/C:N/I:P/A:NHIGH7.0
Уязвимость функции MixCoder_Code() компонента XZ Decoder архиватора 7-Zip, позволяющая нарушителю выполнить произвольный код
CVSS 3.xВЫСОКАЯ 7.0
CVSS:3.x/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:HCVSS 2.0СРЕДНЯЯ 6.2
CVSS:2.0/AV:L/AC:H/Au:N/C:C/I:C/A:CHIGH7.8
7-Zip through 21.07 on Windows allows privilege escalation and command execution when a file with the .7z extension is dragged to the Help>Contents area. This is caused by misconfiguration of 7z.dll and a heap overflow. The command runs in a child process under the 7zFM.exe process. NOTE: multiple third parties have reported that no privilege escalation can occur
CVSS 2.0ВЫСОКАЯ 7.2
CVSS:2.0/AV:L/AC:L/Au:N/C:C/I:C/A:CCVSS 3.xВЫСОКАЯ 7.8
CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HСсылки
- http://packetstormsecurity.com/files/166763/7-Zip-21.07-Code-Execution-Privilege-Escalation.html
- https://github.com/kagancapar/CVE-2022-29072
- https://news.ycombinator.com/item?id=31070256
- https://sourceforge.net/p/sevenzip/bugs/2337/
- https://www.youtube.com/watch?v=sT1cvbu7ZTA
- http://packetstormsecurity.com/files/166763/7-Zip-21.07-Code-Execution-Privilege-Escalation.html
- https://github.com/kagancapar/CVE-2022-29072
- https://news.ycombinator.com/item?id=31070256
- https://sourceforge.net/p/sevenzip/bugs/2337/
- https://www.youtube.com/watch?v=sT1cvbu7ZTA
HIGH7.8
Ppmd7.c in 7-Zip before 23.00 allows an integer underflow and invalid read operation via a crafted 7Z archive.
CVSS 3.xВЫСОКАЯ 7.8
CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HСсылки
- https://ds-security.com/post/integer-overflow-in-7-zip-cve-2023-31102/
- https://security.netapp.com/advisory/ntap-20231110-0007/
- https://sourceforge.net/p/sevenzip/discussion/45797/thread/713c8a8269/
- https://www.7-zip.org/download.html
- https://www.zerodayinitiative.com/advisories/ZDI-23-1165/
- https://ds-security.com/post/integer-overflow-in-7-zip-cve-2023-31102/
- https://security.netapp.com/advisory/ntap-20231110-0007/
- https://sourceforge.net/p/sevenzip/discussion/45797/thread/713c8a8269/
- https://www.7-zip.org/download.html
- https://www.zerodayinitiative.com/advisories/ZDI-23-1165/
HIGH7.8
7-Zip Zstandard Decompression Integer Underflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of 7-Zip. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the implementation of Zstandard decompression. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-24346.
CVSS 3.xВЫСОКАЯ 7.8
CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HHIGH7.0
7-Zip Mark-of-the-Web Bypass Vulnerability. This vulnerability allows remote attackers to bypass the Mark-of-the-Web protection mechanism on affected installations of 7-Zip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of archived files. When extracting files from a crafted archive that bears the Mark-of-the-Web, 7-Zip does not propagate the Mark-of-the-Web to the extracted files. An attacker can leverage this vulnerability to execute arbitrary code in the context of the current user. Was ZDI-CAN-25456.
CVSS 3.xВЫСОКАЯ 7.0
CVSS:3.x/CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:HСсылки
- https://www.zerodayinitiative.com/advisories/ZDI-25-045/
- http://www.openwall.com/lists/oss-security/2025/01/24/6
- https://security.netapp.com/advisory/ntap-20250207-0005/
- https://www.vicarius.io/vsociety/posts/cve-2025-0411-7-zip-mitigation-vulnerability
- https://www.vicarius.io/vsociety/posts/cve-2025-0411-detection-7-zip-vulnerability
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-0411
MEDIUM5.5
7-Zip is a file archiver with a high compression ratio. Zeroes written outside heap buffer in RAR5 handler may lead to memory corruption and denial of service in versions of 7-Zip prior to 25.0.0. Version 25.0.0 contains a fix for the issue.
CVSS 3.xВЫСОКАЯ 7.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVSS 4.0СРЕДНЯЯ 5.5
CVSS:4.0/CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XMEDIUM5.5
7-Zip is a file archiver with a high compression ratio. 7-Zip supports extracting from Compound Documents. Prior to version 25.0.0, a null pointer dereference in the Compound handler may lead to denial of service. Version 25.0.0 contains a fix cor the issue.
CVSS 3.xВЫСОКАЯ 7.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVSS 4.0СРЕДНЯЯ 5.5
CVSS:4.0/CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XLOW3.6
7-Zip before 25.01 does not always properly handle symbolic links during extraction.
CVSS 3.xНИЗКАЯ 3.6
CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:NСсылки
- https://github.com/ip7z/7zip/compare/25.00...25.01
- https://github.com/ip7z/7zip/releases/tag/25.01
- https://github.com/lunbun/CVE-2025-55188/
- https://lunbun.dev/blog/cve-2025-55188/
- https://sourceforge.net/p/sevenzip/discussion/45797/thread/da14cd780b/
- https://www.openwall.com/lists/oss-security/2025/08/09/1
- https://www.vicarius.io/vsociety/posts/cve-2025-55188-detect-7-zip-vulnerable-version
- https://www.vicarius.io/vsociety/posts/cve-2025-55188-mitigate-7-zip-vulnerability
- https://youtu.be/sWT6M1cfnwM
- http://www.openwall.com/lists/oss-security/2025/08/09/1
- http://www.openwall.com/lists/oss-security/2025/08/10/1
- http://www.openwall.com/lists/oss-security/2025/08/13/1
- http://www.openwall.com/lists/oss-security/2025/10/12/2
- http://www.openwall.com/lists/oss-security/2025/10/16/7
HIGH7.8
7-Zip XZ Decompression Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of 7-Zip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the processing of XZ chunked data. Crafted XZ-compressed data can trigger an overflow of a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-30169.
CVSS 3.xВЫСОКАЯ 7.8
CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HHIGH8.1
7-Zip is a file archiver with a high compression ratio. Versions 9.34 through 26.00 contain a heap memory disclosure via SquashFS fragment offset integer overflow on 32-bit builds. 32-bit integer overflow in the SquashFS ReadBlock function allows an attacker-controlled node.Offset value to bypass the fragment bounds check, causing memcpy to read heap memory preceding the cache buffer into the extracted file. The vulnerability is exploitable only on 32-bit builds of 7-Zip where size_t is 32 bits, allowing the addition offsetInBlock + blockSize to wrap modulo 2³². On 64-bit builds the addition is promoted to 64 bits and the check correctly rejects the input. Version 26.01 patches the issue.
CVSS 3.xВЫСОКАЯ 8.1
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:HHIGH8.8
7-Zip is a file archiver with a high compression ratio. Versions 26.00 and prior contain a heap buffer overflow vulnerability caused by an under-allocation in the NTFS compressed stream buffer (GetCuSize shift UB), potentially allowing attackers to cause arbitrary code execution or application crashes. CInStream::GetCuSize() in the NTFS handler computes the compression-unit buffer size as (UInt32)1 << (BlockSizeLog + CompressionUnit), and a crafted image with ClusterSizeLog >= 28 and CompressionUnit == 4 drives the exponent to 32, which is undefined behavior and collapses on x86/x64 so _inBuf is allocated as 1 byte. ReadStream_FALSE then writes up to 256 MB of attacker-controlled data into that 1-byte buffer in 64 KB iterations, and because the CInStream object sits only 304 bytes after _inBuf, its vtable pointer is overwritten and the next dispatched call achieves a vtable hijack. On 32-bit builds the overflow is unconditionally reached; on 64-bit it requires the parallel 8 GB _outBuf allocation to succeed, otherwise failing closed to denial of service. The NTFS handler is enabled by default in stock 7z.dll and, via signature-based fallback matching "NTFS " at offset 3, will open a crafted image regardless of file extension during extraction or testing. Version 26.01 fixes the issue.
CVSS 3.xВЫСОКАЯ 8.8
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HMEDIUM6.5
7-Zip is a file archiver with a high compression ratio. Versions 9.21 through 26.00 contain an An uninitialized memory disclosure vulnerability in the UEFI capsule (.scap) parser in 7-Zip. The OpenCapsule function allocates a heap buffer of attacker-declared CapsuleImageSize (up to 1 GiB) without zero-initialization, then reads the file contents into it with ReadStream_FALSE whose return value is silently discarded. If the file is truncated, the unread tail of the buffer retains uninitialized heap memory, which is then exposed as extracted file content via GetStream. Version 26.0.1 fixes the issue.
CVSS 3.xСРЕДНЯЯ 6.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NMEDIUM4.3
7-Zip is a file archiver with a high compression ratio. Versions 9.11 through 26.00 contain a heap out-of-bounds read of up to 3 bytes in the UDF disc image handler's File Identifier Descriptor parser. In CFileId::Parse (CPP/7zip/Archive/Udf/UdfIn.cpp), after validating size < 38 + idLen + impLen and advancing processed to 38 + impLen + idLen, the alignment-padding loop reads p[processed] while incrementing up to 3 times to reach a 4-byte boundary, and the processed <= size bounds check only runs after the loop. When (38 + impLen + idLen) % 4 != 0 and 38 + impLen + idLen == size, the loop reads 1 to 3 bytes past the end of the exact-size heap buffer allocated via buf.Alloc((size_t)item.Size). The UDF handler is registered for .iso and .udf files and auto-detected by signature, and the OOB read triggers during Open() when listing or extracting a crafted UDF image. Impact is limited to information disclosure (a 1-bit oracle per OOB byte via open/fail behavior) and denial of service (crash under hardened allocators); there is no write primitive. Version 26.01 fixes the issue.
CVSS 3.xСРЕДНЯЯ 4.3
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:NHIGH7.1
7-Zip is a file archiver with a high compression ratio. Versions 9.34 through 26.00 contain an off-by-one heap out-of-bounds read in the WIM (Windows Imaging) archive handler's security descriptor lookup. In CHandler::GetSecurity (CPP/7zip/Archive/Wim/WimHandler.cpp), the per-image SecurOffsets table holds numEntries + 1 cumulative offsets, but the check securityId >= SecurOffsets.Size() admits securityId == numEntries, and the function then reads SecurOffsets[securityId + 1], fetching one UInt32 past the end of the heap-allocated CRecordVector (which performs no bounds checking on operator[]). The securityId is attacker-controlled at offset +0xC of any directory entry in WIM metadata, and the handler is registered for .wim, .swm, .esd, and .ppkg and enabled by default in stock 7z.dll; the OOB triggers zero-click in the GUI because 7zFM.exe's ListView calls GetRawProp(kpidNtSecure) for every item during listing (ASan-confirmed), and is also reachable via CLI listing with 7zz l -slt. Impact is limited to denial of service under hardened allocators and minor information disclosure, since the OOB value is only consumed arithmetically as a length and is not surfaced to the attacker; there is no write primitive.
CVSS 3.xВЫСОКАЯ 7.1
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:HMEDIUM4.2
7-Zip is a file archiver with a high compression ratio. Versions 9.18 through 26.00 contain an uninitialized heap read in the SquashFS archive handler caused by a sparsely populated index array. In the SquashFS handler, _blockToNode is allocated with capacity for every metadata block but populated only when an inode crosses a block boundary, so a crafted image with few inodes spanning many blocks leaves most slots holding raw heap contents (the underlying allocator does not zero-initialize POD storage). When OpenDir looks up an attacker-influenced blockIndex (derived from the RootInode superblock field), it reads two of these uninitialized slots and passes them as the left/right bounds of a binary search over _nodesPos, which dereferences the midpoint without bounds checking; if the resulting value happens to match the search key, the returned index is used to read a full node struct from _nodes whose fields feed further directory parsing, forming a chained OOB read primitive that is heap-layout-dependent and not reliably triggerable. The SquashFS handler is enabled by default in stock 7z.dll and the issue triggers during Open() with no interaction beyond opening the file; impact is denial of service from wild-pointer dereference and potential heap information disclosure, with no write primitive. Version 26.01 fixes the issue.
CVSS 3.xСРЕДНЯЯ 4.2
CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:LHIGH7.1
7-Zip is a file archiver with a high compression ratio. Versions 9.21 through 26.00 contain an off-by-one out-of-bounds read vulnerability in the ParseDepedencyExpression function of the UEFI firmware image parser(CPP/7zip/Archive/UefiHandler.cpp). The function validates an attacker-controlled opcode byte using > instead of >= against the element count of the 10-entry kExpressionCommands static array, allowing an opcode value of 10 to read one pointer slot (8 bytes on x64) past the end of the array in .rodata. The out-of-bounds value is then dereferenced as a const char * and passed through strlen and memcpy into the archive's Characts property, which may cause either a denial of service (access violation when the adjacent bytes do not form a valid readable pointer) or a minor information disclosure of an adjacent .rdata string literal into archive metadata. The vulnerability is reached automatically during IInArchive::Open() via the call path OpenFv/OpenCapsule → ParseVolume → ParseSections when processing a SECTION_DXE_DEPEX (0x13) or SECTION_PEI_DEPEX (0x1B) section whose first body byte is 0x0A, and the UEFI handler is enabled by default in stock 7z.dll with signature-based detection for both UEFIc and UEFIf formats. The outcome (crash vs. silent leak) is deterministic per build but linker-layout dependent, with no write primitive and no disclosure of heap data, secrets, or ASLR base addresses. Version 26.01 fixes the issue.
CVSS 3.xВЫСОКАЯ 7.1
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:HMEDIUM6.5
7-Zip is a file archiver with a high compression ratio. Versions 9.18 through 26.00 contain a heap out-of-bounds read in 7-Zip Ar handler BSD SYMDEF parser. A 4-byte heap out-of-bounds read exists in the Unix ar archive parser in 7-Zip. When parsing a BSD-style __.SYMDEF symbol table, the ParseLibSymbols function reads a 32-bit namesSize field via Get32 at a position that can equal the buffer size, reading 4 bytes past the end of the heap allocation. This reads uninitialized heap data under the default allocator. Version 26.01 patches the issue.
CVSS 3.xСРЕДНЯЯ 6.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NMEDIUM4.8
7-Zip for Windows through 26.01 fails to preserve the Mark-of-the-Web when extracting a crafted RAR5 archive, because its guard that suppresses an archive-supplied Zone.Identifier stream matches the exact name 'Zone.Identifier' while a RAR5 STM record named ':Zone.Identifier:$DATA' is not matched and NTFS canonicalizes it to the same stream, overwriting the propagated Internet-zone marker with ZoneId=0. A second STM record named '::$DATA' overwrites the extracted file's default data stream, letting an attacker defeat SmartScreen/MotW warnings and spoof file content.
CVSS 3.xНИЗКАЯ 3.3
CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:NCVSS 4.0СРЕДНЯЯ 4.8
CVSS:4.0/CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X