CVE-2026-109781: Vulnerability in Mozilla Firefox
Description
Denial-of-service in the Printing: Output component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
CVSS v3.1
Score 6.5medium
Affected software
Mozilla
Firefox
Mozilla
Thunderbird
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-109781 is a denial-of-service vulnerability affecting the Printing: Output component in Mozilla Firefox. The flaw could cause the application to become unresponsive or crash when processing print output. Mozilla fixed this vulnerability in Firefox 158 and Firefox ESR 153.5.
Potential Impact
Successful exploitation of this vulnerability could result in denial-of-service conditions, causing Firefox to crash or become unresponsive during printing operations. There is no indication of code execution or data compromise from the provided information.
Mitigation Recommendations
Users should update to Firefox 158 or later, or Firefox ESR 153.5 or later, to remediate this vulnerability. Applying these official fixes fully addresses the issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-10-13T00:49:18.273Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-106/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-108/","vendor":"Mozilla"}]
Threat ID: 6ace2c512cdf04f65661d57b
Added to database: 10/13/2026, 13:04:17 UTC
Last enriched: 10/13/2026, 13:18:51 UTC
Last updated: 10/13/2026, 18:57:33 UTC
Views: 12
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