CVE-2026-25210 — Integer Overflow or Wraparound in Project Libexpat
Severity
7.8HIGHNVD
CNA6.9
EPSS
0.0%
top 99.52%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJan 30
Latest updateFeb 16
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9