CVE-2022-23852: Debian Linux

Critical severity, CVSS 9.8. EPSS: 4.6% chance of exploitation in the next 30 days.

Expat (aka libexpat) before 2.4.4 has a signed integer overflow in XML_GetBuffer, for configurations with a nonzero XML_CONTEXT_BYTES.

Affected products

• Debian Debian Linux: version 9.0 only
• Libexpat Project Libexpat: before 2.4.4 (fixed in 2.4.4)
• Netapp Clustered Data Ontap: affected versions not specified
• Netapp Oncommand Workflow Automation: affected versions not specified
• Oracle Communications Metasolv Solution: version 6.3.1 only
• Siemens Sinema Remote Connect Server: before 3.1 (fixed in 3.1)
• Tenable Nessus: before 8.15.3 (fixed in 8.15.3); from 10.0.0, before 10.1.1 (fixed in 10.1.1)

Published 2022-01-24. Last modified 2026-06-17.