What’s Vulnerable › Vulnerabilities

CVE-2025-4056: Glib: glib crash after long command line

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-07-28 · updated 2026-06-30
• Weakness: CWE-94

Description

A flaw was found in GLib. A denial of service on Windows platforms may occur if an application attempts to spawn a program using long command lines.

Affected products

• GNOME GLib: before 2.84.1 — fixed in 2.84.1

How to fix

Upgrade to a fixed version: GNOME GLib 2.84.1. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/security/cve/CVE-2025-4056
• https://bugzilla.redhat.com/show_bug.cgi?id=2362826
• https://gitlab.gnome.org/GNOME/glib/-/issues/3668

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