Integer Underflow (Wrap or Wraparound) Affecting strongswan package, versions [4.5.0,6.0.5)
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-UNMANAGED-STRONGSWAN-15857081
- published31 Mar 2026
- disclosed23 Mar 2026
- creditKazuma Matsumoto
Introduced: 23 Mar 2026
CVE-2026-25075 (opens in a new tab)How to fix?
Upgrade strongswan to version 6.0.5 or higher.
Overview
Affected versions of this package are vulnerable to Integer Underflow (Wrap or Wraparound) via the EAP-TTLS AVP parser. An attacker can cause the charon IKE daemon to crash by sending specially crafted AVP data with invalid length fields during IKEv2 authentication, leading to excessive memory allocation or NULL pointer dereference.