Detections
Analytics

CVE-2026-25210

high

Description

In libexpat before 2.7.4, the doContent function does not properly determine the buffer size bufSize because there is no integer overflow check for tag buffer reallocation.

References

https://www.cisa.gov/news-events/ics-advisories/icsa-26-155-04

https://github.com/libexpat/libexpat/pull/1075/commits/9c2d990389e6abe2e44527eeaa8b39f16fe859c7

https://github.com/libexpat/libexpat/pull/1075

https://cert-portal.siemens.com/productcert/html/ssa-253495.html

Details

Source: Mitre, NVD

Published: 2026-01-30

Updated: 2026-06-02

Risk Information

CVSS v2

Base Score: 6.8

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

Severity: Medium

CVSS v3

Base Score: 7.8

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

Severity: High

EPSS

EPSS: 0.00005