CVE-2025-9182: Vulnerability in Mozilla Firefox
Denial-of-service due to out-of-memory in the Graphics: WebRender component. This vulnerability was fixed in Firefox 142, Firefox ESR 140.2, Thunderbird 142, and Thunderbird 140.2.
AI Analysis
Technical Summary
CVE-2025-9182 is a high-severity denial-of-service vulnerability affecting the Graphics: WebRender component of Mozilla Firefox. The flaw allows an attacker to cause out-of-memory conditions leading to denial of service. This vulnerability was fixed in Firefox 142 and Firefox ESR 140.2, as documented in Mozilla Foundation Security Advisories MFSA 2025-64 and MFSA 2025-67. No known exploitation in the wild has been reported. The vulnerability is part of a set of security issues addressed in these releases.
Potential Impact
Successful exploitation of this vulnerability results in denial of service due to out-of-memory conditions in the WebRender graphics component. There is no impact on confidentiality or integrity. The vulnerability could cause Firefox to become unresponsive or crash, affecting availability for users.
Mitigation Recommendations
A fix for this vulnerability is available and has been incorporated in Firefox 142 and Firefox ESR 140.2. Users and administrators should update to these versions or later to remediate this issue. No additional mitigation steps are required as the vulnerability is addressed by the official vendor patch.
CVE-2025-9182: Vulnerability in Mozilla Firefox
Description
Denial-of-service due to out-of-memory in the Graphics: WebRender component. This vulnerability was fixed in Firefox 142, Firefox ESR 140.2, Thunderbird 142, and Thunderbird 140.2.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-9182 is a high-severity denial-of-service vulnerability affecting the Graphics: WebRender component of Mozilla Firefox. The flaw allows an attacker to cause out-of-memory conditions leading to denial of service. This vulnerability was fixed in Firefox 142 and Firefox ESR 140.2, as documented in Mozilla Foundation Security Advisories MFSA 2025-64 and MFSA 2025-67. No known exploitation in the wild has been reported. The vulnerability is part of a set of security issues addressed in these releases.
Potential Impact
Successful exploitation of this vulnerability results in denial of service due to out-of-memory conditions in the WebRender graphics component. There is no impact on confidentiality or integrity. The vulnerability could cause Firefox to become unresponsive or crash, affecting availability for users.
Mitigation Recommendations
A fix for this vulnerability is available and has been incorporated in Firefox 142 and Firefox ESR 140.2. Users and administrators should update to these versions or later to remediate this issue. No additional mitigation steps are required as the vulnerability is addressed by the official vendor patch.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- mozilla
- Date Reserved
- 2025-08-19T15:56:02.735Z
- Cvss Version
- null
- State
- PUBLISHED
Threat ID: 68a4e2f4ad5a09ad00faeca4
Added to database: 8/19/2025, 8:47:48 PM
Last enriched: 4/14/2026, 11:56:14 AM
Last updated: 5/9/2026, 10:51:04 PM
Views: 134
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