VulnerabilityModified
CVE-2025-59375
libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.
HIGH 7.5EPSS 1.31%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.31%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.31% probability · 69th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-770
- Affected
- libexpat project/libexpat
- Source
- cve@mitre.org
References
- https://github.com/libexpat/libexpat/blob/676a4c531ec768732fac215da9730b5f50fbd2bf/expat/Changes#L45-L74Product
- https://github.com/libexpat/libexpat/blob/R_2_7_2/expat/ChangesProduct
- https://github.com/libexpat/libexpat/issues/1018Exploit, Issue Tracking
- https://github.com/libexpat/libexpat/pull/1034Issue Tracking
- https://issues.oss-fuzz.com/issues/439133977Exploit, Issue Tracking
- http://www.openwall.com/lists/oss-security/2025/09/16/2
- http://www.openwall.com/lists/oss-security/2026/05/01/5
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://cert-portal.siemens.com/productcert/html/ssa-089022.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.