Cloudanix VulnDB

CVE-2026-103242

High · 7.1

CVSS

7.1

EPSS

0.1%

Published

Sep 30, 2026

CISA due date

—

The record

A heap-based buffer overflow flaw was found in rpm. RPMTAG_FILESIGNATURES in a crafted, unsigned RPM package's main header is declared with the wrong header type, causing hex2binv() to allocate a one-byte buffer and then write the tag's attacker-controlled, hex-decoded content — of attacker-chosen length — past the end of that allocation. This is reachable via rpm2cpio, rpm2archive, and rpm -qlvp on an untrusted package.

Affected packages

Ecosystem Package Introduced Fixed

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