Integer overflow in Libexpat_project Libexpat
CVE-2022-22822
addBinding in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
Vulnerability class: Integer Overflow
EPSS: 0.048 (90.8th 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
- Libexpat_project Libexpat
- Siemens Sinema_remote_connect_server
- Tenable Nessus
- Debian Debian_linux — versions 10.0, 11.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory, Release Notes)
- cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- cve@mitre.org (x_refsource_CONFIRM, Patch, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
Frequently asked questions
- What is CVE-2022-22822?
- CVE-2022-22822 is a critical-severity vulnerability in Libexpat_project Libexpat, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2022-01-10.
- How severe is CVE-2022-22822?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2022-22822 known to be exploited?
- 14 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.