Use After Free in Mozilla Firefox
CVE-2023-5728
During garbage collection extra operations were performed on a object that should not be. This could have led to a potentially exploitable crash. This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.
Vulnerability class: Use-After-Free
EPSS: 0.012 (64.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Firefox_esr
- Mozilla Thunderbird — versions unspecified
- Debian Debian_linux — versions 10.0, 11.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@mozilla.org (Issue Tracking, Vendor Advisory)
- security@mozilla.org (Vendor Advisory)
- security@mozilla.org (Vendor Advisory)
- security@mozilla.org (Vendor Advisory)
- security@mozilla.org (Mailing List, Third Party Advisory)
- security@mozilla.org (Mailing List, Third Party Advisory)
- security@mozilla.org (Third Party Advisory)
- security@mozilla.org (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-5728?
- CVE-2023-5728 is a high-severity vulnerability in Mozilla Firefox, classified under Use After Free. CVSS score: 7.5/10. Published 2023-10-25.
- How severe is CVE-2023-5728?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-5728 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.