High 7.4Published Feb 22, 2014

CVE-2014-1266The 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…

Updated under an hour ago (Nov 2, 2026, 12:20 AM ET)

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It affects apple iphone_os and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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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.

CVSS: 7.4 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness (CWE): CWE-295
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

apple iphone_os apple:iphone_os	from 6.0 before 6.1.6; from 7.0 before 7.0.6	NVD
apple mac_os_x apple:mac_os_x	from 10.9 before 10.9.2	NVD
apple tvos apple:tvos	from 6.0 before 6.0.2	NVD

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.