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

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

https://cvefeed.io/rssfeed/latest.atom / Tue, 11/10/2026 - 13:52
CVE ID :CVE-2026-125742
Published : Nov. 10, 2026, noon | 27 minutes ago
Description :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 checks, enabling arbitrary code execution.
Severity: 8.5 | HIGH
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