CVE-2026-92076: Vulnerability in Mozilla Firefox
Incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
AI Analysis
Technical Summary
The vulnerability identified as CVE-2026-92076 affects the Networking component of Mozilla Firefox due to incorrect boundary conditions. This type of flaw can lead to security issues such as privilege escalation. Mozilla fixed this vulnerability in Firefox 156 and Firefox ESR 153.3 as part of a broader security update addressing multiple high-impact vulnerabilities. The vendor advisory confirms the fix and classifies the impact as high.
Potential Impact
The impact is classified as high by Mozilla, indicating that exploitation could lead to significant security consequences such as privilege escalation. However, there are no reports of active exploitation in the wild. The vulnerability affects the Networking component, which is critical for browser operations and security.
Mitigation Recommendations
Mozilla has released an official fix for this vulnerability in Firefox 156 and Firefox ESR 153.3. Users and administrators should update to these versions or later to remediate the issue. Since this is not a cloud service, remediation requires applying the update on client systems. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-92076: Vulnerability in Mozilla Firefox
Description
Incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
Affected software
Mozilla
Firefox
Mozilla
Thunderbird
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability identified as CVE-2026-92076 affects the Networking component of Mozilla Firefox due to incorrect boundary conditions. This type of flaw can lead to security issues such as privilege escalation. Mozilla fixed this vulnerability in Firefox 156 and Firefox ESR 153.3 as part of a broader security update addressing multiple high-impact vulnerabilities. The vendor advisory confirms the fix and classifies the impact as high.
Potential Impact
The impact is classified as high by Mozilla, indicating that exploitation could lead to significant security consequences such as privilege escalation. However, there are no reports of active exploitation in the wild. The vulnerability affects the Networking component, which is critical for browser operations and security.
Mitigation Recommendations
Mozilla has released an official fix for this vulnerability in Firefox 156 and Firefox ESR 153.3. Users and administrators should update to these versions or later to remediate the issue. Since this is not a cloud service, remediation requires applying the update on client systems. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-09-15T12:34:37.754Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-90/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-93/","vendor":"Mozilla"}]
Threat ID: 6aa941d955bf5e2cf5d76a3e
Added to database: 09/15/2026, 13:02:17 UTC
Last enriched: 09/15/2026, 13:16:49 UTC
Last updated: 09/16/2026, 03:18:30 UTC
Views: 10
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