CVE-2026-74935

HighCVSS 8.8

Published: 18/08/2026(UTC)Updated: 21/08/2026(UTC)Translated: 19/08/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.30%

23th percentile - higher than 23% of all known CVEs

Summary

Privilege escalation vulnerability in the DOM: Networking component. It was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.

Risk Assessment

May allow an attacker to gain elevated privileges in the browser, potentially leading to data compromise.

Recommendation

Update Firefox or Thunderbird to a patched version.

Original NVD description (English source)

Privilege escalation in the DOM: Networking component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.