Integer Overflow or Wraparound Affecting expat package, versions [,2.7.4)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published2 Feb 2026
- disclosed30 Jan 2026
- creditUnknown
Introduced: 30 Jan 2026
CVE-2026-25210 (opens in a new tab)How to fix?
Upgrade expat to version 2.7.4 or higher.
Overview
Affected versions of this package are vulnerable to Integer Overflow or Wraparound in the doContent() function in xmlparse.c. An attacker can cause memory corruption or potentially execute arbitrary code by providing specially crafted input that triggers an integer overflow.