CVE-2026-125742

7-Zip before 26.06 contains a heap out-of-bounds write vulnerability in the LZX decoder that lets attackers corrupt memory when a continuation CAB volume declares a smaller window. Attackers can entice victims to extract crafted multi-volume CAB archives, where a stale pos value bypasses bounds...

CVE-2026-125742 7-Zip before 26.06 Heap Out-of-Bounds Write via LZX Decoder in CAB Extraction

7-Zip before 26.06 contains a heap out-of-bounds write vulnerability in the LZX decoder that lets attackers corrupt memory when a continuation CAB volume declares a smaller window. Attackers can entice victims to extract crafted multi-volume CAB archives, where a stale pos value bypasses bounds...

CVE-2026-125742

7-Zip versions prior to 26.06 are vulnerable to a heap out-of-bounds write in the LZX decoder . The root cause is a stale _pos value that bypasses bounds checks when a continuation CAB volume declares a smaller window. An attacker can exploit this by enticing a victim to extract a crafted multi-v...

EUVD-2026-120897

7-Zip before 26.06 contains a heap out-of-bounds write vulnerability in the LZX decoder that lets attackers corrupt memory when a continuation CAB volume declares a smaller window. Attackers can entice victims to extract crafted multi-volume CAB archives, where a stale pos value bypasses bounds...

CVE-2026-125742: 7-Zip: 7-Zip before 26.06 contains a heap out-of-bounds write vulnerability in the LZX decoder that lets attackers corrupt…

7-Zip before 26.06 contains a heap out-of-bounds write vulnerability in the LZX decoder that lets attackers corrupt memory when a continuation CAB volume declares a smaller window. Attackers can entice victims to extract crafted multi-volume CAB archives, where a stale pos value bypasses bounds...

PT-2026-141597

7-Zip before 26.06 contains a heap out-of-bounds write vulnerability in the LZX decoder that lets attackers corrupt memory when a continuation CAB volume declares a smaller window. Attackers can entice victims to extract crafted multi-volume CAB archives, where a stale pos value bypasses bounds...

CVE-2026-55586

SumatraPDF is a multi-format reader for Windows. In 3.6.1 and earlier, a crafted CHM file can supply malformed LZX Huffman code lengths to makedecodetable in ext/CHMLib/lzx.c. In the long-code branch, the function writes new internal nodes through nextsymbol before validating that the canonical...

CVE-2026-55586

SumatraPDF is a multi-format reader for Windows. In 3.6.1 and earlier, a crafted CHM file can supply malformed LZX Huffman code lengths to makedecodetable in ext/CHMLib/lzx.c. In the long-code branch, the function writes new internal nodes through nextsymbol before validating that the canonical...

CVE-2026-55586 SumatraPDF: Heap out-of-bounds write in vendored CHMLib LZX Huffman table construction reachable from crafted CHM files

SumatraPDF is a multi-format reader for Windows. In 3.6.1 and earlier, a crafted CHM file can supply malformed LZX Huffman code lengths to makedecodetable in ext/CHMLib/lzx.c. In the long-code branch, the function writes new internal nodes through nextsymbol before validating that the canonical...

CVE-2026-55586 SumatraPDF: Heap out-of-bounds write in vendored CHMLib LZX Huffman table construction reachable from crafted CHM files

SumatraPDF is a multi-format reader for Windows. In 3.6.1 and earlier, a crafted CHM file can supply malformed LZX Huffman code lengths to makedecodetable in ext/CHMLib/lzx.c. In the long-code branch, the function writes new internal nodes through nextsymbol before validating that the canonical...

CVE-2026-55586 SumatraPDF: Heap out-of-bounds write in vendored CHMLib LZX Huffman table construction reachable from crafted CHM files

SumatraPDF is a multi-format reader for Windows. In 3.6.1 and earlier, a crafted CHM file can supply malformed LZX Huffman code lengths to makedecodetable in ext/CHMLib/lzx.c. In the long-code branch, the function writes new internal nodes through nextsymbol before validating that the canonical...

PT-2026-79059

Name of the Vulnerable Software and Affected Versions SumatraPDF versions prior to 3.6.2 Description A crafted CHM file can provide malformed LZX Huffman code lengths to the make decode table function in ext/CHMLib/lzx.c. In the long-code branch, the function writes new internal nodes via next...

EUVD-2005-2660

Malware in sbrugna...

EUVD-2010-4631

Malware in sbrugna...

SUSE CVE-2005-2659

Buffer overflow in the LZX decompression in CHM Lib chmlib 0.35, as used in products such as KchmViewer, has unknown impact and attack vectors...

SUSE CVE-2010-4666

Buffer overflow in libarchive 3.0 pre-release code allows remote attackers to cause a denial of service application crash or possibly have unspecified other impact via a crafted CAB file, which is not properly handled during the reading of Huffman code data within LZX compressed data...

Super File Explorer 1.0.1 Arbitrary File Upload

Document Title: =============== Super File Explorer 1.0.1 - Arbitrary File Upload Vulnerability References Source: ==================== https://www.vulnerability-lab.com/getcontent.php?id=2034 Release Date: ============= 2017-02-23 Vulnerability Laboratory ID VL-ID:...

Comodo AntiVirus - Heap Overflow in LZX Decompression

Comodo AntiVirus - Heap Overflow in LZX Decompression Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=737 LzxDecoder::init initializes the vector LzxDecoder-window to a fixed size of 2^method bytes, which is then used during LzxDecoder::Extract. It's possible for LZX compressed...

Comodo AntiVirus - Heap Overflow in LZX Decompression

Exploit for windows platform in category dos / poc Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=737 LzxDecoder::init initializes the vector LzxDecoder-window to a fixed size of 2^method bytes, which is then used during LzxDecoder::Extract. It's possible for LZX compressed...

Comodo AntiVirus - Heap Overflow in LZX Decompression

Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=737 LzxDecoder::init initializes the vector LzxDecoder-window to a fixed size of 2^method bytes, which is then used during LzxDecoder::Extract. It's possible for LZX compressed streams to exceed this size. Writes to the window buff...