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CVE-2022-23990 libexpat

Affected softwarelibexpat
Severity7.5 High CVSS 3.1 3 scores
WeaknessInteger overflow (CWE-190)
Published26 Jan 2022
Updated14 Oct 2026

Description

Expat (aka libexpat) before 2.4.4 has an integer overflow in the doProlog function.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 4 years ago.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment exploitation: none
  • Indexed PoC none indexed
  • EPSS 4.7% chance in 30 days

Waratek protection

Outside Waratek scope

A Java vulnerability, but not one Waratek protects. It affects only Java on a user's desktop (applets, Web Start, JavaFX, the installer), sits in a product the Waratek agent can't be installed into, or is in a package we don't expect in business applications. The decision below says which.

  • Protection none
  • Action not pursued none
  • Review human Researcher
  • Record active
Decided by Manual classification of this CVE in the legacy dataset
Finding A manual classification set this CVE's status to Outside Waratek scope, but the CVE names a tracked product.

CVSS

7.5 HIGH v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 3 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H NVD Primary published
CVSS 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CISA-ADP Secondary
CVSS 2.0 5.0 none AV:N/AC:L/Au:N/C:N/I:N/A:P NVD Primary

Affected software and releases

Oracle advisories

AdvisoryTypeQuarterProducts Oracle names in its risk matrix
Oracle Critical Patch Update October 2023 ↗ CPU 2023-Q4 Oracle Enterprise Manager / Enterprise Manager Install (LibExpat) (13.5.0.0)
Oracle Critical Patch Update April 2022 ↗ CPU 2022-Q2 Oracle Communications Applications / User Interface (LibExpat) (6.3.1)

Oracle components and versions

FamilyComponentVersions, as Oracle lists themRead as
Oracle Communications Applications User Interface (LibExpat) 6.3.1 6.3.1
Oracle Enterprise Manager Enterprise Manager Install (LibExpat) 13.5.0.0 13.5.0.0

Products and versions

6 products, 9 version entries
SourceVendorProductSchemeAffected versions
nvd debian debian linux generic 10.0 · 11.0
nvd fedoraproject fedora generic 34 · 35
nvd libexpat project libexpat generic < 2.4.4
nvd oracle communications metasolv solution generic 6.3.1
nvd siemens sinema remote connect server generic < 3.1
nvd tenable nessus generic < 8.15.3 · ≥ 10.0.0 and < 10.1.1

References

URLTags
https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf Patch, Third Party Advisory
https://github.com/libexpat/libexpat/pull/551 Issue Tracking, Patch, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/34NXVL2RZC2YZRV74ZQ3RNFB7WCEUP7D/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7FF2UH7MPXKTADYSJUAHI2Y5UHBSHUH/
https://security.gentoo.org/glsa/202209-24 Third Party Advisory
https://www.debian.org/security/2022/dsa-5073 Mailing List, 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
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
https://cert-portal.siemens.com/productcert/html/ssa-484086.html

Timeline

Published2022-01-26By the CVE Program.
NVD record modified2026-10-14NVD's own last-modified date for this record.