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Vulnerability · Published Jun 16, 2026 · Assigned by redhat

CVE-2026-4367Libxpm: libxpm: denial of service via out-of-bounds read in xpm file parsing

Medium 5.5

In plain English

A medium-severity out-of-bounds read in Red Hat Enterprise Linux 10 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.1%top 97.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A flaw was found in libXpm. A local user with low privileges could exploit an Out-of-Bounds Read vulnerability in the `xpmNextWord()` function by processing a specially crafted or very small XPM (X PixMap) image file. This improper validation of file boundaries can cause an internal pointer to read beyond the file's end, leading to application crashes and Denial of Service conditions.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20libxpm3.5.19-r0ALPINE-CVE-2026-4367
Alpine:v3.21libxpm3.5.19-r0ALPINE-CVE-2026-4367
Alpine:v3.22libxpm3.5.19-r0ALPINE-CVE-2026-4367
Alpine:v3.23libxpm3.5.19-r0ALPINE-CVE-2026-4367
Alpine:v3.24libxpm3.5.19-r0ALPINE-CVE-2026-4367
Debian:12libxpmno fix listedDEBIAN-CVE-2026-4367
Debian:13libxpm1:3.5.17-1+deb13u1DEBIAN-CVE-2026-4367
Debian:14libxpm1:3.5.19-1DEBIAN-CVE-2026-4367
Ubuntu:22.04:LTSlibxpm1:3.5.12-1ubuntu0.22.04.3USN-8600-1
Ubuntu:22.04:LTSlibxpm1:3.5.12-1ubuntu0.22.04.3UBUNTU-CVE-2026-4367
Ubuntu:24.04:LTSlibxpm1:3.5.17-1ubuntu0.24.04.1UBUNTU-CVE-2026-4367
Ubuntu:24.04:LTSlibxpm1:3.5.17-1ubuntu0.24.04.1USN-8600-1
Ubuntu:25.10libxpmno fix listedUBUNTU-CVE-2026-4367
Ubuntu:26.04:LTSlibxpm1:3.5.17-1ubuntu0.26.04.1UBUNTU-CVE-2026-4367
Ubuntu:26.04:LTSlibxpm1:3.5.17-1ubuntu0.26.04.1USN-8600-1
Ubuntu:22.04:LTSmotifno fix listedUBUNTU-CVE-2026-4367
Ubuntu:24.04:LTSmotifno fix listedUBUNTU-CVE-2026-4367
Ubuntu:25.10motifno fix listedUBUNTU-CVE-2026-4367
Ubuntu:26.04:LTSmotifno fix listedUBUNTU-CVE-2026-4367
Ubuntu:26.10motifno fix listedUBUNTU-CVE-2026-4367

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Hardened Images see references
Red Hat Red Hat Hardened Images see references
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references

Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References