Race condition, use-after-free in the Graphics: WebRender component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, and Firefox ESR < 140.9.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 3
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Mozilla Firefox
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
|
— |
115.34.0
|
|
Mozilla Firefox
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
|
— |
149.0
|
|
Mozilla Firefox
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
|
128.0
|
140.9.0
|
References 4
https://bugzilla.mozilla.org/show_bug.cgi?id=2011129
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-20/
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-21/
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-22/
security@mozilla.org