CVE-2025-59375

high

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.

References

References
More

https://www.cisa.gov/news-events/ics-advisories/icsa-26-062-03

https://www.cisa.gov/news-events/ics-advisories/icsa-26-043-06

https://issues.oss-fuzz.com/issues/439133977

https://github.com/libexpat/libexpat/pull/1034

https://github.com/libexpat/libexpat/issues/1018

https://github.com/libexpat/libexpat/blob/R_2_7_2/expat/Changes

https://github.com/libexpat/libexpat/blob/676a4c531ec768732fac215da9730b5f50fbd2bf/expat/Changes#L45-L74

https://cert-portal.siemens.com/productcert/html/ssa-089022.html

https://cert-portal.siemens.com/productcert/html/ssa-082556.html

http://www.openwall.com/lists/oss-security/2026/05/01/5

http://www.openwall.com/lists/oss-security/2025/09/16/2

Details

Source: Mitre, NVD

Published: 2025-09-15

Updated: 2026-05-12

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High

EPSS

EPSS: 0.00054