CVE-2022-22823
Critical
CVE-2022-22823
build_model in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
Exploit probability
3.4%
Published
January 8, 2022
Required by
Not available
Last source change
August 12, 2026
02 / AFFECTED SOFTWARE
Affected packages
47 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2022-22823
View original source
build_model in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
05 / REFERENCES
Further evidence
- http://www.openwall.com/lists/oss-security/2022/01/17/3
- https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/22xxx/CVE-2022-22823.json
- https://github.com/libexpat/libexpat/pull/539
- https://nvd.nist.gov/vuln/detail/CVE-2022-22823
- https://security.gentoo.org/glsa/202209-24
- https://www.debian.org/security/2022/dsa-5073
- https://www.tenable.com/security/tns-2022-05