CVE-2022-43680
CVSS v3
7.5
HIGH
EPSS Score
2.4 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2022-10-24
Frequently asked questions
What is CVE-2022-43680?
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.
Is CVE-2022-43680 actively exploited?
Active exploitation of CVE-2022-43680 has not been confirmed. Its EPSS score was 2.4% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2022-43680?
CVE-2022-43680 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2022-43680 affecting your environment?
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