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Fencer Vulns
medium 5.5

CVE-2026-94287 json

Denial of service via unsigned underflow in libXpm's write path

published 2026-09-28 42 d ago modified 2026-09-29 40 d ago also EUVD-2026-88179

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 2%
public exploits
0
none known

Summary

A denial of service via unsigned underflow in libXpm's write path in libXpm before 3.5.19 could be used by local attackers to cause unbounded CPU usage and memory exhaustion.

Patch / fix

  • x.org libXpm 3.5.19
  • libxpm Debian 14 1:3.5.20-1

debian advisories DEBIAN-CVE-2026-94287

  • libxpm Ubuntu 22.04 LTS 1:3.5.12-1ubuntu0.22.04.4
  • libxpm Ubuntu 24.04 LTS 1:3.5.17-1ubuntu0.24.04.2
  • libxpm Ubuntu 26.04 LTS 1:3.5.17-1ubuntu0.26.04.2

ubuntu advisories UBUNTU-CVE-2026-94287

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libXpm hummingbird 1 3.5.19-4.hum1

red hat advisories RHSA-2026:47072

  • libXpm SLE Workstation Extension 15 SP7, SLE Module for Package Hub 15 SP7, SLE Module for Basesystem 15 SP7 3.5.12-150000.3.13.1
  • libXpm SLES for SAP applications 16.0, SLES 16.0 3.5.17-160000.4.1
  • libXpm SLES LTSS Extended Security 12 SP5 3.5.11-6.13.1

suse advisories SUSE-SU-2026:4763-1SUSE-SU-2026:4761-1SUSE-SU-2026:24204-1

  • libXpm openSUSE Leap 16.0 3.5.17-160000.4.1
  • libXpm openSUSE Tumbleweed 3.5.18-3.1

opensuse advisories openSUSE-SU-2026:22056-1openSUSE-SU-2026:11896-1

  • libxpm Alpine 3.24 3.5.20-r0

alpine advisories ALPINE-CVE-2026-94287

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-94287 updated cvss 5.5

libXpm: libXpm: Denial of Service via unsigned integer underflow

  • Red Hat Enterprise Linux 6 libXpm 3.5.17-5.el10
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 libXpm, libXpm 3.5.17-5.el10 Red Hat Enterprise Linux 8 libXpm, libXpm 3.5.17-5.el10 Red Hat Enterprise Linux 9 libXpm, libXpm 3.5.17-5.el10 Red Hat Enterprise Linux 10 libXpm 3.5.17-5.el10
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Hardened Images libXpm 3.5.19-4.hum1
    fixed: vendor fix RHSA-2026:47072

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
42 d ago

Exploit prediction

0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

  • x.org libXpm

Classification

Weakness
  • CWE-1050 Excessive Platform Resource Consumption within a Loop

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.