CVEvulnerability
CVE-2026-84138
6.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2026-09-01
- Last modified
- 2026-09-03
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-400
Description
Denial-of-service in the PDF Viewer component. This vulnerability was fixed in Firefox 155 and Thunderbird 155.
Affected configurations
• mozilla firefox (< 155.0.0)
• mozilla thunderbird (< 155.0)
Related
Weakness · CWE (1)
- CWE-400 Uncontrolled Resource Consumption weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2056164 Issue Tracking
- https://www.mozilla.org/security/advisories/mfsa2026-82/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-86/ Vendor Advisory