Use-after-free in the Networking component. (CVE-2026-92026)
CVE-2026-92026 is a use-after-free vulnerability in the Networking component of Firefox. This security flaw was addressed and fixed in Firefox 156 and Firefox ESR versions 140.16 and 153.3. The vulnerability is considered high impact due to the potential risks associated with use-after-free bugs. No active exploits in the wild have been reported. Users are advised to update to the fixed versions to mitigate this issue.
AI Analysis
Technical Summary
This vulnerability involves a use-after-free flaw in the Networking component of Firefox. Use-after-free vulnerabilities occur when a program continues to use a pointer after the memory it points to has been freed, potentially leading to memory corruption or other unintended behavior. Mozilla has addressed this issue by releasing patches in Firefox 156, Firefox ESR 140.16, and Firefox ESR 153.3. The advisory classifies the impact as high and no active exploitation has been reported.
Potential Impact
The vulnerability could allow an attacker to cause memory corruption in the Networking component, which may lead to crashes or potentially enable further exploitation. The vendor rates the impact as high. There are no reports of active exploitation in the wild.
Mitigation Recommendations
Users and administrators should update to Firefox 156, Firefox ESR 140.16, or Firefox ESR 153.3 or later to remediate this vulnerability. The vendor has provided official fixes, so applying these updates fully mitigates the risk.
Use-after-free in the Networking component. (CVE-2026-92026)
Description
CVE-2026-92026 is a use-after-free vulnerability in the Networking component of Firefox. This security flaw was addressed and fixed in Firefox 156 and Firefox ESR versions 140.16 and 153.3. The vulnerability is considered high impact due to the potential risks associated with use-after-free bugs. No active exploits in the wild have been reported. Users are advised to update to the fixed versions to mitigate this issue.
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a use-after-free flaw in the Networking component of Firefox. Use-after-free vulnerabilities occur when a program continues to use a pointer after the memory it points to has been freed, potentially leading to memory corruption or other unintended behavior. Mozilla has addressed this issue by releasing patches in Firefox 156, Firefox ESR 140.16, and Firefox ESR 153.3. The advisory classifies the impact as high and no active exploitation has been reported.
Potential Impact
The vulnerability could allow an attacker to cause memory corruption in the Networking component, which may lead to crashes or potentially enable further exploitation. The vendor rates the impact as high. There are no reports of active exploitation in the wild.
Mitigation Recommendations
Users and administrators should update to Firefox 156, Firefox ESR 140.16, or Firefox ESR 153.3 or later to remediate this vulnerability. The vendor has provided official fixes, so applying these updates fully mitigates the risk.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-4gpp-v4j5-5hhg
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-92026"]
- State
- PUBLISHED
Threat ID: 6aaa081255bf5e2cf5ea4a76
Added to database: 09/16/2026, 03:08:02 UTC
Last enriched: 09/16/2026, 05:08:30 UTC
Last updated: 09/16/2026, 06:01:24 UTC
Views: 5
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.