🛡️ CVE-2022-25236 — debian-linux

🔴 CVSS 9.8 — Critical ✅ No Known Exploit CWE-668 NVD
9.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

xmlparse.c in Expat (aka libexpat) before 2.4.5 allows attackers to insert namespace-separator characters into namespace URIs.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2022-25236 is classified as CWE-668: Exposure of Resource to Wrong Sphere. A resource is made reachable from a context that should not have access to it.

Affected software

CVE-2022-25236 is recorded against 5 packages.

  • debian-linux
  • http-server
  • libexpat (fixed in 2.4.5)
  • sinema-remote-connect-server (fixed in 3.1)
  • zfs-storage-appliance-kit

Timeline and source

Published on 16 February 2022 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

packetstormsecurity.com
www.openwall.com
cert-portal.siemens.com
github.com
lists.debian.org
lists.fedoraproject.org
lists.fedoraproject.org
security.gentoo.org
security.netapp.com
www.debian.org
www.oracle.com
packetstormsecurity.com
www.openwall.com
cert-portal.siemens.com
github.com

CVE-2022-25236 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity CRITICAL
CVSS Score 9.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-668
Public Exploit ✅ No
Source NVD
Published 2022-02-16
Updated 2026-08-11
Modified 2026-06-17

Affected Packages

Software From version Fixed in
debian-linux
http-server
libexpat 2.4.5
sinema-remote-connect-server 3.1
zfs-storage-appliance-kit

References

Mailing List, Third Party Advisory http://www.openwall.com/lists/oss-security/2022/02/19/1
Patch, Third Party Advisory https://github.com/libexpat/libexpat/pull/561
Mailing List, Third Party Advisory http://www.openwall.com/lists/oss-security/2022/02/19/1
Patch, Third Party Advisory https://github.com/libexpat/libexpat/pull/561

Similar Threats

Exploit Protection

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