CVE-2011-2701
MEDIUM · CVSS 5.8EPSS 1.8%EU EUVD
The ocsp_check function in rlm_eap_tls.c in FreeRADIUS 2.1.11, when OCSP is enabled, does not properly parse replies from OCSP responders, which allows remote attackers to bypass authentication by using the EAP-TLS protocol with a revoked X.509 client certificate.
Key facts
- CVSS score
- 5.8 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:M/Au:N/C:P/I:P/A:N- Weakness (CWE)
- CWE-287
- EPSS score
- 1.8% (79th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2011-2682)
- Published
- August 4, 2011
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2011-2682 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- freeradius / freeradius
References
- http://secunia.com/advisories/45425(Vendor Advisory)
- http://securityreason.com/securityalert/8325
- http://securitytracker.com/id?1025833
- http://www.openwall.com/lists/oss-security/2011/07/15/6
- http://www.openwall.com/lists/oss-security/2011/07/18/2
- http://www.openwall.com/lists/oss-security/2011/07/20/9
- http://www.securityfocus.com/archive/1/518974/100/0/threaded
- http://www.securityfocus.com/bid/48880
- https://bugzilla.redhat.com/show_bug.cgi?id=724815(Patch)
- https://exchange.xforce.ibmcloud.com/vulnerabilities/68782
- https://www.dfn-cert.de/informationen/Sicherheitsbulletins/dsb-2011-01.html
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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