NULL pointer dereference in Mozilla products - CVE-2025-8033
Published: July 22, 2025
Vulnerability identifier: #VU113139
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-8033
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Mozilla
Affected software:
Mozilla Firefox
Firefox ESR
Firefox for Android
Mozilla Firefox
Firefox ESR
Firefox for Android
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in the JavaScript engine when handling closed generators. A remote attacker can trick the victim into visiting a specially crafted website and crash the browser.
How to mitigate CVE-2025-8033
Install updates from vendor's website.
Sources
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-57/
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-58/
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-59/
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-56/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1973990