Use After Free in Microsoft Windows
CVE-2023-5174
If Windows failed to duplicate a handle during process creation, the sandbox code may have inadvertently freed a pointer twice, resulting in a use-after-free and a potentially exploitable crash. *This bug only affects Firefox on Windows wh…
Vulnerability class: Use-After-Free
EPSS: 0.010 (58.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Microsoft Windows
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Firefox_esr
- Mozilla Thunderbird — versions unspecified
Weakness classification (CWE)
References
- security@mozilla.org (Permissions Required)
- security@mozilla.org (Vendor Advisory)
- security@mozilla.org (Vendor Advisory)
- security@mozilla.org (Vendor Advisory)
Frequently asked questions
- What is CVE-2023-5174?
- CVE-2023-5174 is a critical-severity vulnerability in Microsoft Windows, classified under Use After Free. CVSS score: 9.8/10. Published 2023-09-27.
- How severe is CVE-2023-5174?
- Critical severity. CVSS v3 base score is 9.8 out of 10.