CVEvulnerability
CVE-2026-2782
9.8 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2026-02-24
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-269
Description
Privilege escalation in the Netmonitor component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
Affected configurations
• mozilla firefox (< 140.8.0)
• mozilla firefox (< 148.0)
• mozilla thunderbird (< 140.8.0)
• mozilla thunderbird (< 148.0)
Related
Weakness · CWE (1)
- CWE-269 Improper Privilege Management weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2010743 Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2026-13/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-15/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-16/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-17/ Vendor Advisory