Critical severity9.8NVD Advisory· Published Feb 16, 2022· Updated Jun 17, 2026
CVE-2022-25235
CVE-2022-25235
Description
xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain validation of encoding, such as checks for whether a UTF-8 character is valid in a certain context.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
63- Expat/libexpatdescription
- osv-coords52 versionspkg:rpm/almalinux/thunderbirdpkg:rpm/almalinux/expatpkg:rpm/almalinux/expat-develpkg:rpm/suse/expat&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/expat&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/almalinux/firefoxpkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2015%20SP2pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-BCLpkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/expat&distro=SUSE%20Manager%20Proxy%204.1pkg:rpm/suse/expat&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.1pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Micro%205.0pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/expat&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/expat&distro=SUSE%20Enterprise%20Storage%207pkg:rpm/almalinux/xmlrpc-c-c%2B%2Bpkg:rpm/almalinux/xmlrpc-c-client%2B%2Bpkg:rpm/almalinux/xmlrpc-c-develpkg:rpm/opensuse/expat&distro=openSUSE%20Leap%2015.4pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/almalinux/mingw32-expatpkg:rpm/almalinux/mingw64-expatpkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP4pkg:rpm/opensuse/expat&distro=openSUSE%20Tumbleweedpkg:rpm/suse/expat&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/expat&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-ESPOSpkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/expat&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/expat&distro=SUSE%20Manager%20Server%204.1pkg:rpm/suse/expat&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/opensuse/expat&distro=openSUSE%20Leap%2015.3
< 91.7.0-2.el8_5.alma+ 51 more
- (no CPE)range: < 91.7.0-2.el8_5.alma
- (no CPE)range: < 2.2.5-8.el8_6.2
- (no CPE)range: < 2.2.5-8.el8_6.2
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 91.7.0-3.el8_5.alma
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 1.51.0-5.el8_5.1
- (no CPE)range: < 1.51.0-5.el8_5.1
- (no CPE)range: < 1.51.0-5.el8_5.1
- (no CPE)range: < 2.4.4-150400.3.6.9
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.4.8-1.el8
- (no CPE)range: < 2.4.8-1.el8
- (no CPE)range: < 2.0.1-88.42.18.1
- (no CPE)range: < 2.0.1-88.42.18.1
- (no CPE)range: < 2.4.4-150400.3.6.9
- (no CPE)range: < 2.4.6-1.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.2.5-3.15.1
- (no CPE)range: < 2.1.0-21.18.1
- (no CPE)range: < 2.2.5-3.15.1
<2.4.5+ 1 more
- (no CPE)range: <2.4.5
- cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*range: <2.4.5
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
cpe:2.3:a:oracle:http_server:12.2.1.3.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:oracle:http_server:12.2.1.3.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:http_server:12.2.1.4.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:sinema_remote_connect_server:*:*:*:*:*:*:*:*Range: <3.1
Patches
Vulnerability mechanics
References
10- github.com/libexpat/libexpat/pull/562nvdPatchThird Party Advisory
- www.oracle.com/security-alerts/cpuapr2022.htmlnvdPatchThird Party Advisory
- www.openwall.com/lists/oss-security/2022/02/19/1nvdMailing ListThird Party Advisory
- cert-portal.siemens.com/productcert/pdf/ssa-484086.pdfnvdThird Party Advisory
- lists.debian.org/debian-lts-announce/2022/03/msg00007.htmlnvdMailing ListThird Party Advisory
- security.gentoo.org/glsa/202209-24nvdThird Party Advisory
- security.netapp.com/advisory/ntap-20220303-0008/nvdThird Party Advisory
- www.debian.org/security/2022/dsa-5085nvdThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3UFRBA3UQVIQKXTBUQXDWQOVWNBKLERU/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y27XO3JMKAOMQZVPS3B4MJGEAHCZF5OM/nvd
News mentions
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