CVE-2022-23852
CRITICAL · CVSS 9.8EPSS 4.6%EU EUVD
Expat (aka libexpat) before 2.4.4 has a signed integer overflow in XML_GetBuffer, for configurations with a nonzero XML_CONTEXT_BYTES.
Key facts
- CVSS score
- 9.8 (v3.1)
- Severity
- CRITICAL
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
- CWE-190
- EPSS score
- 4.6% (91th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2022-28778)
- Published
- January 24, 2022
- NVD last modified
- October 14, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2022-28778 in the EU Vulnerability Database. Last updated in EUVD on October 14, 2026.
View on the EU Vulnerability DatabaseAffected products
- debian / debian linux
- libexpat project / libexpat
- netapp / clustered data ontap
- netapp / oncommand workflow automation
- oracle / communications metasolv solution
- siemens / sinema remote connect server
- tenable / nessus
Certified products that may be affected
2 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.
- Nessus Manager 8.11.1 - Tenable, Inc. - Common Criteria CCEVS-VR-VID-11067-2020 - archived
- Tenable SecurityCenter 4.4 (SC) and Components: 3D Tool 2.0.1 Log Correlation Engine 3.6 (LCE), Passive Vulnerability Scanner 3.6 (PVS), Nessus 5.0.1, and xTool 2.1 - Tenable Network Security, Inc. - Common Criteria CCEVS-VR-VID-10443-2012 - archived
References
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://cert-portal.siemens.com/productcert/html/ssa-484086.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf(Third Party Advisory)
- https://github.com/libexpat/libexpat/pull/550(Issue Tracking, Patch, Third Party Advisory)
- https://lists.debian.org/debian-lts-announce/2022/03/msg00007.html(Mailing List, Third Party Advisory)
- https://security.gentoo.org/glsa/202209-24(Third Party Advisory)
- https://security.netapp.com/advisory/ntap-20220217-0001/(Third Party Advisory)
- https://www.debian.org/security/2022/dsa-5073(Third Party Advisory)
- https://www.oracle.com/security-alerts/cpuapr2022.html(Third Party Advisory)
- https://www.tenable.com/security/tns-2022-05(Third Party Advisory)
Last updated October 15, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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