CVE-2026-78123
MEDIUMCVSS 5.9/10EPSS 0.41%
Last modified
CVE-2026-78123 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. strongSwan 5.0.2 through 6.0.7 has an Expired Pointer Dereference in PKCS#7 parsing in the openssl plugin.. EPSS estimates a 0.41% chance of exploitation in the next 30 days.
Description
strongSwan 5.0.2 through 6.0.7 has an Expired Pointer Dereference in PKCS#7 parsing in the openssl plugin.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Strongswan | Strongswan | >= 5.0.2, < 6.1.0 |
References
- https://github.com/strongswan/strongswan/releases/tag/6.1.0Patch, Release Notes, Vendor Advisory
- https://www.strongswan.org/blog/2026/09/07/strongswan-vulnerability-(cve-2026-78123).htmlMitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-78123?
strongSwan 5.0.2 through 6.0.7 has an Expired Pointer Dereference in PKCS#7 parsing in the openssl plugin.
How severe is CVE-2026-78123?
CVE-2026-78123 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 0.41% probability of exploitation in the next 30 days.
How do I fix CVE-2026-78123?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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Are you affected by CVE-2026-78123?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST