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CVE-2026-34085VulnerabilityPublished Updated

Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Affects Red HatSource GCVE Database

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Authoritative record:CVE-2026-34085· Medium 5.9

Not known to be exploited · CVSS 5.9 Medium : upgrade Red Hat fontconfig to 2.17.1 when convenient.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
5.9Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2.17.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 25 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade fontconfig and fontconfig/fontconfig to 2.17.1.

Affected software

ProductAffectedFixed in
fontconfig projectfontconfigAffected
  • <2.17.1
Fixed in
  • 2.17.1
GitHubfontconfig/fontconfigpkg:github/fontconfig/fontconfigOther threatsAffected
  • <2.17.1
Fixed in
  • 2.17.1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Red Hat has released updated fontconfig RPM packages (fontconfig-2.17.1-0.1.hum1 and related) for Red Hat Hardened Images to address this vulnerability. Applying these official updates is the recommended remediation. Red Hat is not aware of any practical temporary workarounds that fully mitigate this issue. Users should follow Red Hat's update instructions at https://images.redhat.com/ and consult the advisory at https://access.redhat.com/errata/RHSA-2026:13722 for details.

Description

This update includes the following RPMs: fontconfig: * fontconfig-2.17.1-0.1.hum1 (aarch64, x86_64) * fontconfig-devel-2.17.1-0.1.hum1 (aarch64, x86_64) * fontconfig-devel-doc-2.17.1-0.1.hum1 (noarch) * fontconfig-2.17.1-0.1.hum1.src (src) Security Fix(es): fontconfig: * CVE-2026-34085

References

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