What’s Vulnerable › Vulnerabilities

CVE-2014-1266

• Severity: high (CVSS 7.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2014-02-22 · updated 2026-06-17
• Weakness: CWE-295

Description

The SSLVerifySignedServerKeyExchange function in libsecurity_ssl/lib/sslKeyExchange.c in the Secure Transport feature in the Data Security component in Apple iOS 6.x before 6.1.6 and 7.x before 7.0.6, Apple TV 6.x before 6.0.2, and Apple OS X 10.9.x before 10.9.2 does not check the signature in a TLS Server Key Exchange message, which allows man-in-the-middle attackers to spoof SSL servers by (1) using an arbitrary private key for the signing step or (2) omitting the signing step.

Affected products

• Apple Iphone Os: from 6.0 before 6.1.6; from 7.0 before 7.0.6 — fixed in 6.1.6, 7.0.6
• macOS: from 10.9 before 10.9.2 — fixed in 10.9.2
• Apple tvOS: from 6.0 before 6.0.2 — fixed in 6.0.2

How to fix

Upgrade to a fixed version: Apple Iphone Os 6.1.6, 7.0.6; macOS 10.9.2; Apple tvOS 6.0.2. Check the vendor advisory for mitigations.

References

• http://it.slashdot.org/comments.pl?sid=4821073&cid=46310187
• http://support.apple.com/kb/HT6146
• http://support.apple.com/kb/HT6147
• http://support.apple.com/kb/HT6148
• http://support.apple.com/kb/HT6150
• https://news.ycombinator.com/item?id=7281378
• https://www.cs.columbia.edu/~smb/blog/2014-02/2014-02-23.html
• https://www.cs.columbia.edu/~smb/blog/2014-02/2014-02-24.html
• https://www.imperialviolet.org/2014/02/22/applebug.html
• http://it.slashdot.org/comments.pl?sid=4821073&cid=46310187
• http://support.apple.com/kb/HT6146
• http://support.apple.com/kb/HT6147

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