Out-of-bounds Write Affecting libpcap package, versions [1.10.0,1.10.6)
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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Test your applications- Snyk IDSNYK-CONAN-LIBPCAP-14742516
- published31 Dec 2025
- disclosed31 Dec 2025
- creditUnknown
Introduced: 31 Dec 2025
CVE-2025-11964 (opens in a new tab)How to fix?
Upgrade libpcap to version 1.10.6 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Write via the utf_16le_to_utf_8_truncated function. An attacker can cause data to be written beyond the end of a buffer by triggering the conversion of Windows error messages containing characters that require 4-byte UTF-8 encoding. This is only exploitable if running on Windows and the conversion of such error messages occurs.