CVE Catalog

CVE-2026-2769

HighCVSS 8.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.42%

34th percentile - higher than 34% of all known CVEs

Summary

A use-after-free vulnerability was found in the IndexedDB component of Firefox and Thunderbird. The flaw is fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

Risk Assessment

An attacker could exploit this vulnerability to execute arbitrary code or cause a crash, compromising user data confidentiality and integrity.

Recommendation

Immediately update Firefox and Thunderbird to the latest versions mentioned in the advisory.

Related vulnerabilities

Original NVD description (English source)

Use-after-free in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS