What’s Vulnerable › Vulnerabilities

CVE-2022-43680

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-10-24 · updated 2026-10-14
• Weakness: CWE-416

Description

In libexpat through 2.4.9, there is a use-after free caused by overeager destruction of a shared DTD in XML_ExternalEntityParserCreate in out-of-memory situations.

Affected products

• Debian Linux: 10.0, 11.0
• Fedoraproject Fedora: 35, 36, 37
• libexpat project libexpat: through 2.4.9
• Active IQ Unified Manager for VMware vSphere, Linux, and Microsoft Windows: all versions
• NetApp H300S Firmware: all versions
• NetApp H410C Firmware: all versions
• NetApp H410S Firmware: all versions
• NetApp H500S Firmware: all versions
• NetApp H700S Firmware: all versions
• NetApp Hci Compute Node Firmware: all versions
• NetApp OnCommand Workflow Automation: all versions
• NetApp Solidfire & Hci Management Node: all versions

References

• http://www.openwall.com/lists/oss-security/2023/12/28/5
• http://www.openwall.com/lists/oss-security/2024/01/03/5
• https://github.com/libexpat/libexpat/issues/649
• https://github.com/libexpat/libexpat/pull/616
• https://github.com/libexpat/libexpat/pull/650
• https://lists.debian.org/debian-lts-announce/2022/10/msg00033.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AJ5VY2VYXE4WTRGQ6LMGLF6FV3SY37YE/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BY4OPSIB33ETNUXZY2UPZ4NGQ3OKDY4D/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DPQVIF6TOJNY2T3ZZETFKR4G34FFREBQ/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FFCOMBSOJKLIKCGCJWHLJXO4EVYBG7AR/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IUJ2BULJTZ2BMSKQHB6US674P55UCWWS/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XG5XOOB7CD55CEE6OJYKSACSIMQ4RWQ6/

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