NULL pointer dereference in Strongswan
CVE-2026-25075
strongSwan versions 4.5.0 prior to 6.0.5 contain an integer underflow vulnerability in the EAP-TTLS AVP parser that allows unauthenticated remote attackers to cause a denial of service by sending crafted AVP data with invalid length fields…
EPSS: 0.002 (48.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Strongswan — versions 4.5.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- disclosure@vulncheck.com (vendor-advisory, exploit)
- disclosure@vulncheck.com (release-notes)
- disclosure@vulncheck.com (third-party-advisory)
- disclosure@vulncheck.com (technical-description, exploit)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2026-25075?
- CVE-2026-25075 is a high-severity vulnerability in Strongswan, classified under Integer Underflow. CVSS score: 7.5/10. Published 2026-03-23.
- How severe is CVE-2026-25075?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2026-25075 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.