CVE-2026-109713

5.4Medium

Published 13 Oct 2026 · NVD status: Deferred · AI triage by gemini-3.8-flash

5.4Medium

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required
Impact: Limited impact
Weakness: CWE-416

Impact

Remote attackers can potentially compromise browser integrity or leak data if a user interacts with malicious content. Exploitation requires user interaction to trigger the crash reporting flow.

Root cause

A use-after-free condition exists in the Crash Reporting component.

Affected systems

Firefox versions prior to 158, Firefox ESR prior to 153.5, and Thunderbird prior to 158 and 153.5.

CVSS v3.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Fix & remediation

Upgrade to Firefox 158, Firefox ESR 153.5, Thunderbird 158, or Thunderbird 153.5. No interim configuration mitigations are provided, so apply the software updates immediately.

shell

$ sudo apt-get update && sudo apt-get --only-upgrade install firefox thunderbird

AI-suggested. Run it in staging first and check it against the vendor advisory. Why?

Ad · In-content banner

NVD description

Use-after-free in the Crash Reporting component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.

References

Source: nvd.nist.gov/vuln/detail/CVE-2026-109713