Use After Free in Libexpat_project Libexpat
CVE-2022-40674
libexpat before 2.4.9 has a use-after-free in the doContent function in xmlparse.c.
Vulnerability class: Use-After-Free
EPSS: 0.018 (75.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Libexpat_project Libexpat
- Debian Debian_linux — versions 10.0, 11.0
- Fedoraproject Fedora — versions 35, 36, 37
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Patch, Third Party Advisory, Issue Tracking)
- cve@mitre.org (Patch, Third Party Advisory, Issue Tracking)
- cve@mitre.org (vendor-advisory, Third Party Advisory)
- cve@mitre.org (mailing-list, Third Party Advisory, Issue Tracking)
- cve@mitre.org (vendor-advisory, Third Party Advisory)
- cve@mitre.org (vendor-advisory)
- cve@mitre.org (vendor-advisory)
- cve@mitre.org (Third Party Advisory)
- cve@mitre.org (vendor-advisory)
- cve@mitre.org (vendor-advisory)
Frequently asked questions
- What is CVE-2022-40674?
- CVE-2022-40674 is a high-severity vulnerability in Libexpat_project Libexpat, classified under Use After Free. CVSS score: 8.1/10. Published 2022-09-14.
- How severe is CVE-2022-40674?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2022-40674 known to be exploited?
- 14 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.