Cyber Resilience

CVE-2022-22823

Critical

Published: 10 January 2022

Published
10 January 2022
Modified
05 May 2025
KEV Added
—
Patch
—
CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0043 63.0th percentile
Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2022-22823 is a critical-severity Integer Overflow or Wraparound (CWE-190) vulnerability in Tenable Nessus. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 37.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

build_model in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.

CWE(s)
CWE-190

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

libexpat project
libexpat
≤ 2.4.3
tenable
nessus
≤ 8.15.3 · 10.0.0 — 10.1.1
debian
debian linux
10.0, 11.0
siemens
sinema remote connect server
≤ 3.1

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References