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CVE-2014-0224

7.4
HIGHCVSS v3.1 Base Score
89.69%
HIGH RiskEPSS (100th percentile)

OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h does not properly restrict processing of ChangeCipherSpec messages, which allows man-in-the-middle attackers to trigger use of a zero-length master key in certain OpenSSL-to-OpenSSL communications, and consequently hijack sessions or obtain sensitive information, via a crafted TLS handshake, aka the "CCS Injection" vulnerability.

Published: 6/5/2014
Modified: 5/6/2026
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Vulnerability Summary

CVSS v3 Score

7.4HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS v2 Score

5.8

AV:N/AC:M/Au:N/C:P/I:P/A:N

EPSS Score (Exploitation Probability)

89.69%HIGH Exploitation Risk
100th percentile

This vulnerability has a 89.69% probability of being exploited in the next 30 days, ranking higher than 100% of all scored CVEs.

CWE Classification

Related Vulnerabilities

Same Weakness Type(CWE-326)

Similar SeverityHIGH