What’s Vulnerable › Vulnerabilities

CVE-2023-26463

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-04-15 · updated 2026-06-17
• Weakness: CWE-295

Description

strongSwan 5.9.8 and 5.9.9 potentially allows remote code execution because it uses a variable named "public" for two different purposes within the same function. There is initially incorrect access control, later followed by an expired pointer dereference. One attack vector is sending an untrusted client certificate during EAP-TLS. A server is affected only if it loads plugins that implement TLS-based EAP methods (EAP-TLS, EAP-TTLS, EAP-PEAP, or EAP-TNC). This is fixed in 5.9.10.

Affected products

• strongSwan: 5.9.8, 5.9.9

References

• https://github.com/strongswan/strongswan/releases
• https://security.netapp.com/advisory/ntap-20230517-0010/
• https://www.strongswan.org/blog/2023/03/02/strongswan-vulnerability-%28cve-2023-26463%29.html
• https://github.com/strongswan/strongswan/releases
• https://security.netapp.com/advisory/ntap-20230517-0010/
• https://www.strongswan.org/blog/2023/03/02/strongswan-vulnerability-%28cve-2023-26463%29.html

Get alerted when CVE-2023-26463 or the next vulnerability affects your stack