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CVE-2026-2777

Privilege escalation in the Messaging System component PUBLISHED

Description (CNA)

Privilege escalation in the Messaging System component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

Affected (CNA)

Vendor / productVersions
Mozilla / Firefoxunaffected 115.33 through 115.*; unaffected 140.8 through 140.*; unaffected 148 through *
Mozilla / Thunderbirdunaffected 140.8 through 140.*; unaffected 148 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

redhat-SADP

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Privilege escalation in the Messaging System component