CVE-2026-8090: Vulnerability in Mozilla Firefox
CVE-2026-8090 is a use-after-free vulnerability in the DOM networking component of Mozilla Firefox. This memory safety issue was addressed and fixed in Firefox versions 150. 0. 2, Firefox ESR 140. 10. 2, and Firefox ESR 115. 35. 2. The vulnerability is part of a set of memory safety bugs that showed evidence of memory corruption and could potentially be exploited to execute arbitrary code. Mozilla has released official security advisories confirming the fixes and classifying the impact as high.
AI Analysis
Technical Summary
CVE-2026-8090 is a use-after-free vulnerability affecting the DOM networking component in Mozilla Firefox. Use-after-free bugs occur when a program continues to use memory after it has been freed, potentially leading to memory corruption. This vulnerability was fixed in Firefox 150.0.2, Firefox ESR 140.10.2, and Firefox ESR 115.35.2. The Mozilla advisories indicate that this issue is among several memory safety bugs that could have been exploited to run arbitrary code with sufficient effort. The vendor has published multiple security advisories detailing the fixes and impact.
Potential Impact
The vulnerability can lead to memory corruption and potentially allow an attacker to execute arbitrary code within the context of the affected Firefox browser. The impact is rated high by Mozilla. There are no reports of active exploitation in the wild. Users running vulnerable versions of Firefox ESR or standard Firefox prior to the fixed versions are at risk.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 150.0.2, Firefox ESR 140.10.2, and Firefox ESR 115.35.2. Users and administrators should update affected Firefox installations to these versions or later to remediate the issue. Since the vulnerability is fixed in these releases, no further immediate mitigation steps are required beyond applying the update.
CVE-2026-8090: Vulnerability in Mozilla Firefox
Description
CVE-2026-8090 is a use-after-free vulnerability in the DOM networking component of Mozilla Firefox. This memory safety issue was addressed and fixed in Firefox versions 150. 0. 2, Firefox ESR 140. 10. 2, and Firefox ESR 115. 35. 2. The vulnerability is part of a set of memory safety bugs that showed evidence of memory corruption and could potentially be exploited to execute arbitrary code. Mozilla has released official security advisories confirming the fixes and classifying the impact as high.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-8090 is a use-after-free vulnerability affecting the DOM networking component in Mozilla Firefox. Use-after-free bugs occur when a program continues to use memory after it has been freed, potentially leading to memory corruption. This vulnerability was fixed in Firefox 150.0.2, Firefox ESR 140.10.2, and Firefox ESR 115.35.2. The Mozilla advisories indicate that this issue is among several memory safety bugs that could have been exploited to run arbitrary code with sufficient effort. The vendor has published multiple security advisories detailing the fixes and impact.
Potential Impact
The vulnerability can lead to memory corruption and potentially allow an attacker to execute arbitrary code within the context of the affected Firefox browser. The impact is rated high by Mozilla. There are no reports of active exploitation in the wild. Users running vulnerable versions of Firefox ESR or standard Firefox prior to the fixed versions are at risk.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 150.0.2, Firefox ESR 140.10.2, and Firefox ESR 115.35.2. Users and administrators should update affected Firefox installations to these versions or later to remediate the issue. Since the vulnerability is fixed in these releases, no further immediate mitigation steps are required beyond applying the update.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-05-07T12:45:04.220Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-40/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-41/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-42/","vendor":"Mozilla"}]
Threat ID: 69fc8e61cbff5d8610ef2cb4
Added to database: 5/7/2026, 1:06:41 PM
Last enriched: 5/7/2026, 1:22:19 PM
Last updated: 5/7/2026, 2:16:19 PM
Views: 4
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