Use of Uninitialized Resource Affecting 7zip package, versions *


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
0.28% (20th percentile)

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  • Snyk IDSNYK-DEBIAN13-7ZIP-17098500
  • published30 May 2026
  • disclosed5 Jun 2026

Introduced: 30 May 2026

CVE-2026-48101  (opens in a new tab)
CWE-908  (opens in a new tab)

How to fix?

There is no fixed version for Debian:13 7zip.

NVD Description

Note: Versions mentioned in the description apply only to the upstream 7zip package and not the 7zip package as distributed by Debian. See How to fix? for Debian:13 relevant fixed versions and status.

7-Zip is a file archiver with a high compression ratio. Versions 9.21 through 26.00 contain an An uninitialized memory disclosure vulnerability in the UEFI capsule (.scap) parser in 7-Zip. The OpenCapsule function allocates a heap buffer of attacker-declared CapsuleImageSize (up to 1 GiB) without zero-initialization, then reads the file contents into it with ReadStream_FALSE whose return value is silently discarded. If the file is truncated, the unread tail of the buffer retains uninitialized heap memory, which is then exposed as extracted file content via GetStream. Version 26.0.1 fixes the issue.

CVSS Base Scores

version 3.1