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.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Tue, 10 Nov 2026 12:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | 7-Zip before 26.06 Heap Out-of-Bounds Write via LZX Decoder in CAB Extraction | |
| First Time appeared |
7-zip
7-zip 7-zip |
|
| Weaknesses | CWE-787 | |
| CPEs | cpe:2.3:a:7-zip:7-zip:*:*:*:*:*:*:*:* | |
| Vendors & Products |
7-zip
7-zip 7-zip |
|
| References |
|
|
| Metrics |
cvssV3_1
|
Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-11-10T12:04:02.382Z
Reserved: 2026-11-10T11:57:45.504Z
Link: CVE-2026-125742
No data.
Status : Awaiting Analysis
Published: 2026-11-10T12:17:18.893
Modified: 2026-11-10T12:17:19.043
Link: CVE-2026-125742
No data.
OpenCVE Enrichment
No data.
Weaknesses