CVE-2026-6769: Vulnerability in Mozilla Firefox
CVE-2026-6769 is a privilege escalation vulnerability in the Debugger component of Mozilla Firefox. This vulnerability was addressed and fixed in Firefox 150 and Firefox ESR 140. 10. The Mozilla advisories confirm that this issue has been remediated in these versions. The impact is considered moderate according to the vendor advisory. There are no known exploits in the wild at this time. Users running affected versions prior to Firefox 150 or Firefox ESR 140. 10 should upgrade to the fixed versions to mitigate this vulnerability.
AI Analysis
Technical Summary
CVE-2026-6769 is a vulnerability in the Debugger component of Mozilla Firefox that allows privilege escalation. The flaw was fixed in Firefox 150 and Firefox ESR 140.10. Mozilla's official security advisories (MFSA2026-30 and MFSA2026-32) list this vulnerability among other security issues resolved in these releases. The vendor classifies the impact of this specific vulnerability as moderate. No CVSS score is provided. The advisories confirm the availability of an official fix.
Potential Impact
The vulnerability allows an attacker to escalate privileges within the Firefox Debugger component, potentially leading to unauthorized actions or access within the browser context. The impact is rated moderate by Mozilla. There are no reports of exploitation in the wild. Successful exploitation could affect the security posture of the affected Firefox installations prior to the fixed versions.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 150 and Firefox ESR 140.10. Users and administrators should update their Firefox installations to these versions or later to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-6769: Vulnerability in Mozilla Firefox
Description
CVE-2026-6769 is a privilege escalation vulnerability in the Debugger component of Mozilla Firefox. This vulnerability was addressed and fixed in Firefox 150 and Firefox ESR 140. 10. The Mozilla advisories confirm that this issue has been remediated in these versions. The impact is considered moderate according to the vendor advisory. There are no known exploits in the wild at this time. Users running affected versions prior to Firefox 150 or Firefox ESR 140. 10 should upgrade to the fixed versions to mitigate this vulnerability.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-6769 is a vulnerability in the Debugger component of Mozilla Firefox that allows privilege escalation. The flaw was fixed in Firefox 150 and Firefox ESR 140.10. Mozilla's official security advisories (MFSA2026-30 and MFSA2026-32) list this vulnerability among other security issues resolved in these releases. The vendor classifies the impact of this specific vulnerability as moderate. No CVSS score is provided. The advisories confirm the availability of an official fix.
Potential Impact
The vulnerability allows an attacker to escalate privileges within the Firefox Debugger component, potentially leading to unauthorized actions or access within the browser context. The impact is rated moderate by Mozilla. There are no reports of exploitation in the wild. Successful exploitation could affect the security posture of the affected Firefox installations prior to the fixed versions.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 150 and Firefox ESR 140.10. Users and administrators should update their Firefox installations to these versions or later to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-04-21T12:41:01.657Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-30/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-32/","vendor":"Mozilla"}]
Threat ID: 69e7789e19fe3cd2cdd164b1
Added to database: 4/21/2026, 1:16:14 PM
Last enriched: 4/21/2026, 1:33:10 PM
Last updated: 4/21/2026, 3:44:11 PM
Views: 4
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.