{"cve":"CVE-2011-5094","nvd":{"published":"2012-06-16T21:55:02.500","modified":"2026-06-16T23:35:56.103","status":"Modified","description":"Mozilla Network Security Services (NSS) 3.x, with certain settings of the SSL_ENABLE_RENEGOTIATION option, does not properly restrict client-initiated renegotiation within the SSL and TLS protocols, which might make it easier for remote attackers to cause a denial of service (CPU consumption) by performing many renegotiations within a single connection, a different vulnerability than CVE-2011-1473.  NOTE: it can also be argued that it is the responsibility of server deployments, not a security library, to prevent or limit renegotiation when it is inappropriate within a specific environment","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://orchilles.com/2011/03/ssl-renegotiation-dos.html","http://vincent.bernat.im/en/blog/2011-ssl-dos-mitigation.html","http://www.educatedguesswork.org/2011/10/ssltls_and_computational_dos.html","http://www.ietf.org/mail-archive/web/tls/current/msg07553.html","http://www.ietf.org/mail-archive/web/tls/current/msg07564.html"],"products":["mozilla:network_security_services"],"source":"nvd","synced_at":"2026-10-19T20:24:00.973572543+00:00"},"epss":{"cve":"CVE-2011-5094","score":0.02666,"percentile":0.85733,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}