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CVE-2026-100781

nvd nist
Published: Sep 29, 2026Modified: Oct 5, 2026

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9.6
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Exploitability: 2.8 / Impact: 6.0
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.

Affected (7)

Mozilla
2 products
Firefox
Thunderbird
Configuration A
7 vulnerable
Vulnerable SoftwareAffected Versions
Mozilla
Firefox
version < 157.0.0
Firefox
115.1.0 ≤ version < 115.42.0
Firefox
140.0 ≤ version < 140.17.0
Firefox
153.0 ≤ version < 153.4.0
Mozilla
Thunderbird
version < 157.0
Thunderbird
140.0 ≤ version < 140.17.0
Thunderbird
153.0 ≤ version < 153.4.0

Related CWEs

CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

References (8)

Source: security@mozilla.org
Permissions Required
Source: security@mozilla.org
Vendor Advisory
Source: security@mozilla.org
Vendor Advisory
Source: security@mozilla.org
Vendor Advisory
Source: security@mozilla.org
Vendor Advisory
Source: security@mozilla.org
Vendor Advisory
Source: security@mozilla.org
Vendor Advisory
Source: security@mozilla.org
Vendor Advisory

Timeline

No history available yet.