CVE-2021-46880
9.8 · CRITICALOverview
CVE-2021-46880 is a critical-severity vulnerability affecting openbsd libressl. It was published on April 15, 2023 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
x509/x509_verify.c in LibreSSL before 3.4.2, and OpenBSD before 7.0 errata 006, allows authentication bypass because an error for an unverified certificate chain is sometimes discarded.
Remediation
Check the references section for vendor advisories and patches from openbsd. Update libressl to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| openbsd | libressl | >= 0, < 3.4.2 | Affected |
| openbsd | openbsd | >= 0, < 7.0 | Affected |
References
Frequently Asked Questions
What is CVE-2021-46880?
CVE-2021-46880 is a critical-severity vulnerability affecting openbsd libressl. It was published on April 15, 2023 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2021-46880?
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-46880?
Check the references section for vendor advisories and patches from openbsd. Update libressl to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-46880?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-46880 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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