CVE-2026-6761: Vulnerability in Mozilla Firefox
CVE-2026-6761 is a privilege escalation vulnerability in the Networking component of Mozilla Firefox. It was fixed in Firefox 150 and Firefox ESR 140. 10. The vulnerability is rated with moderate impact by Mozilla. This issue is part of a broader set of security fixes released in these versions addressing multiple vulnerabilities, including memory safety bugs and other privilege escalations. No known exploits in the wild have been reported. Users are advised to update to the fixed versions to mitigate the risk.
AI Analysis
Technical Summary
CVE-2026-6761 is a privilege escalation vulnerability affecting the Networking component of Mozilla Firefox. The flaw allows an attacker to gain elevated privileges within the browser context. Mozilla addressed this vulnerability in Firefox 150 and Firefox ESR 140.10 as part of a security update that also fixed numerous other high and moderate impact vulnerabilities. The vendor advisory classifies the impact as moderate and confirms the fix is available in these versions.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to escalate privileges within the Firefox browser environment, potentially leading to unauthorized actions or access. However, no exploits in the wild have been reported. The impact is considered moderate by Mozilla.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 150 and Firefox ESR 140.10. Users and administrators should update to these versions or later to remediate the vulnerability. Since this is a client-side application, patching is the primary and recommended mitigation. No additional vendor-recommended mitigations are indicated.
CVE-2026-6761: Vulnerability in Mozilla Firefox
Description
CVE-2026-6761 is a privilege escalation vulnerability in the Networking component of Mozilla Firefox. It was fixed in Firefox 150 and Firefox ESR 140. 10. The vulnerability is rated with moderate impact by Mozilla. This issue is part of a broader set of security fixes released in these versions addressing multiple vulnerabilities, including memory safety bugs and other privilege escalations. No known exploits in the wild have been reported. Users are advised to update to the fixed versions to mitigate the risk.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-6761 is a privilege escalation vulnerability affecting the Networking component of Mozilla Firefox. The flaw allows an attacker to gain elevated privileges within the browser context. Mozilla addressed this vulnerability in Firefox 150 and Firefox ESR 140.10 as part of a security update that also fixed numerous other high and moderate impact vulnerabilities. The vendor advisory classifies the impact as moderate and confirms the fix is available in these versions.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to escalate privileges within the Firefox browser environment, potentially leading to unauthorized actions or access. However, no exploits in the wild have been reported. The impact is considered moderate by Mozilla.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 150 and Firefox ESR 140.10. Users and administrators should update to these versions or later to remediate the vulnerability. Since this is a client-side application, patching is the primary and recommended mitigation. No additional vendor-recommended mitigations are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-04-21T12:40:55.759Z
- 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: 69e7789c19fe3cd2cdd163e3
Added to database: 4/21/2026, 1:16:12 PM
Last enriched: 4/21/2026, 1:46:09 PM
Last updated: 4/21/2026, 3:14:37 PM
Views: 2
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