Vulnerability in Strongswan

CVE-2026-78123

strongSwan 5.0.2 through 6.0.7 has an Expired Pointer Dereference in PKCS#7 parsing in the openssl plugin.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Strongswan

Weakness classification (CWE)

CWE-825

References

Frequently asked questions

What is CVE-2026-78123?: CVE-2026-78123 is a medium-severity vulnerability in Strongswan, classified under CWE-825. CVSS score: 5.9/10. Published 2026-09-11.
How severe is CVE-2026-78123?: Medium severity. CVSS v3 base score is 5.9 out of 10.