Is CVE-2014-1266 being actively exploited?

CVE-2014-1266 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2014-1266?

CVE-2014-1266 has a CVSS 3.1 base score of 7.4 (HIGH).

CVE-2014-1266

HIGH · CVSS 7.4EPSS 5.7%EU EUVD

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.

Key facts

CVSS score: 7.4 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness (CWE): CWE-295
EPSS score: 5.7% (93th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2014-1344)
Published: February 22, 2014
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2014-1344 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

apple / iphone os
apple / mac os x
apple / tvos

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)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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