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CVE-2025-14512VulnerabilityPublished Updated

CVE-2025-14512: GNOME glib · Integer Overflow or Wraparound

Affects GNOME glibSource CVE Database V5

0

Not known to be exploited · CVSS 6.5 Medium : upgrade to 2.86.3 when convenient.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 47% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2.86.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Dec 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Upgrade GNOME glib to 2.86.3.

Affected software

ProductAffectedFixed in
GNOMEglibAffected
  • <2.86.3
Fixed in
  • 2.86.3
Red Hatredhat/glibpkg:rpm/redhat/glibOther threatsAffected
  • =0
  • =2.56.4-169.el8_10
  • =2.80.4-10.el10_1.13
Fixed in–

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 official security updates for glib2 packages in Red Hat Enterprise Linux 8 and 10 that address this vulnerability. Users should apply the updates as described in Red Hat advisories RHSA-2026:15953 and RHSA-2026:15969. No additional mitigation steps are required once the updates are applied.

Description

A flaw was found in glib. This vulnerability allows a heap buffer overflow and denial-of-service (DoS) via an integer overflow in GLib's GIO (GLib Input/Output) escape_byte_string() function when processing malicious file or remote filesystem attribute values.

References

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