Vulnerability · NVD

CVE-2026-48112

CVE-2026-48112, medium severity (CVSS 6.5): 1 tracked app concerned, all fixed or indeterminable on their current version.

Severity (CVSS): 6.5
Exploitation: 0.4 %
Tracked apps: 1
Still exposed: 0

Published on 2026-06-05

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.

Attack vector : Network No privileges required

Show raw CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

EPSS 0.39% exploit very unlikely percentile 30.4%

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 26.03 patched

Observed affected builds (19)

26.00 25.01 25.00 24.09 24.08 24.07 24.06 24.05 23.01 22.01 22.00 21.07 21.06 19.00 19.00.00.0 18.06 18.05 18.01 16.04

Vulnerable CPE configurations (1)

Vendor	Product	Platform	Versions	CPE 2.3 URI
7-zip	7-zip All platforms (wildcard)	All platforms (wildcard)	≥9.34 <26.01	cpe:2.3:a:7-zip:7-zip::::::::

View on NVD ↗ Advisory · securitylab.github.com

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