Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
References
| Link | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2058064 | Permissions Required |
| https://www.mozilla.org/security/advisories/mfsa2026-90/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2026-91/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2026-92/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2026-93/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2026-94/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2026-95/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2026-96/ | Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
06 Oct 2026, 14:48
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://bugzilla.mozilla.org/show_bug.cgi?id=2058064 - Permissions Required | |
| References | () https://www.mozilla.org/security/advisories/mfsa2026-90/ - Vendor Advisory | |
| References | () https://www.mozilla.org/security/advisories/mfsa2026-91/ - Vendor Advisory | |
| References | () https://www.mozilla.org/security/advisories/mfsa2026-92/ - Vendor Advisory | |
| References | () https://www.mozilla.org/security/advisories/mfsa2026-93/ - Vendor Advisory | |
| References | () https://www.mozilla.org/security/advisories/mfsa2026-94/ - Vendor Advisory | |
| References | () https://www.mozilla.org/security/advisories/mfsa2026-95/ - Vendor Advisory | |
| References | () https://www.mozilla.org/security/advisories/mfsa2026-96/ - Vendor Advisory | |
| First Time |
Mozilla thunderbird
Mozilla Mozilla firefox |
|
| CPE | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* |
16 Sep 2026, 15:18
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
|
| Summary | (en) Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3. |
Information
Published : 2026-09-15 13:16
Updated : 2026-10-06 14:48
NVD link : CVE-2026-92007
Mitre link : CVE-2026-92007
CVE.ORG link : CVE-2026-92007
JSON object : View
Products Affected
mozilla
- firefox
- thunderbird
CWE
CWE-120
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
