CVE-2020-16088
CRITICALCVSS 9.8/10EPSS 2.40%
Last modified
CVE-2020-16088 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. iked in OpenIKED, as used in OpenBSD through 6.7, allows authentication bypass because ca.c has the wrong logic for checking whether a public key matches.. EPSS estimates a 2.40% chance of exploitation in the next 30 days.
Description
iked in OpenIKED, as used in OpenBSD through 6.7, allows authentication bypass because ca.c has the wrong logic for checking whether a public key matches.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Openbsd | Openbsd | <= 6.7 |
References
- https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/014_iked.patch.sigExploit, Vendor Advisory
- https://github.com/openbsd/src/commit/7afb2d41c6d373cf965285840b85c45011357115Patch, Third Party Advisory
- https://github.com/xcllnt/openiked/commits/masterPatch, Third Party Advisory
- https://www.openiked.org/security.htmlVendor Advisory
- https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/014_iked.patch.sigExploit, Vendor Advisory
- https://github.com/openbsd/src/commit/7afb2d41c6d373cf965285840b85c45011357115Patch, Third Party Advisory
- https://github.com/xcllnt/openiked/commits/masterPatch, Third Party Advisory
- https://www.openiked.org/security.htmlVendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-16088?
iked in OpenIKED, as used in OpenBSD through 6.7, allows authentication bypass because ca.c has the wrong logic for checking whether a public key matches.
How severe is CVE-2020-16088?
CVE-2020-16088 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.40% probability of exploitation in the next 30 days.
How do I fix CVE-2020-16088?
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.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2020-16088?
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