Security features bypass in Mozilla products - CVE-2025-9185
Published: August 19, 2025 / Updated: August 22, 2025
Vulnerability identifier: #VU114226
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:U/U:Green
CVE-ID: CVE-2025-9185
CWE-ID: CWE-254
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Mozilla
Affected software:
Mozilla Firefox
Firefox ESR
Firefox for Android
Firefox Focus for Android
Mozilla Firefox
Firefox ESR
Firefox for Android
Firefox Focus for Android
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to an error in the Graphics: Canvas2D component. A remote attacker can bypass Same-origin policy restrictions.
How to mitigate CVE-2025-9185
Install updates from vendor's website.
Sources
- https://bugzilla.mozilla.org/show_bug.cgi?id=1979782
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-64/
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-67/
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-66/
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-65/