CVE-2025-14087: gnome glib Integer Overflow or Wraparound

Vulnerability summary

CVE-2025-14087 is a critical (CVSS 9.8) Integer Overflow or Wraparound vulnerability in gnome glib. EPSS estimates a 0.83% chance of exploitation in the next 30 days, higher than 56.7% of scored vulnerabilities.

Timeline

1. 10-12-2025
   PublishedVulnerability first disclosed.
2. 14-10-2026
   Last modifiedVulnerability information updated.

Description

A flaw was found in GLib (Gnome Lib). This vulnerability allows a remote attacker to cause heap corruption, leading to a denial of service or potential code execution via a buffer-underflow in the GVariant parser when processing maliciously crafted input strings.

• CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.