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Appaloosa Scout

Vulnerability · NVD

CVE-2026-48092

MEDIUM 4.3

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.

Attack vector : Network No privileges required
Show raw CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
EPSS 0.03% exploit very unlikely percentile 10.1%

Tracked apps referencing this CVE

For each app: the affected range, the fixing version, and where the tracked app stands today.

  • 7-Zip Windows winget:7zip.7zip
    Affected ≥9.34 <26.01 Fixed in 26.01 Latest tracked 26.01 patched
Vulnerable CPE configurations (1)
Vendor Product Versions
7-zip 7-zip
All platforms (wildcard)
 ≥9.34 <26.01
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