HIGH
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
Published Feb 22, 2014
7.4
HIGHCVSS 3.1
EPSS 5.74%
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
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
7.4 HIGH NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact None
No CVSS v3.0 score for this CVE.
5.8 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:P/A:N
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
5.74% 0.05741
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.05741
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (26 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.74% (0.05741) | 92.83th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.69% (0.05694) | 91.99th | v5 (v2026.06.15) |
| May 22, 2026 | 19.83% (0.19827) | 95.54th | v4 (v2025.03.14) |
| Feb 27, 2026 | 17.90% (0.17901) | 95.01th | v4 (v2025.03.14) |
| Jan 27, 2026 | 33.99% (0.33986) | 96.85th | v4 (v2025.03.14) |
| Oct 9, 2025 | 31.99% (0.31992) | 96.58th | v4 (v2025.03.14) |
| Oct 8, 2025 | 30.17% (0.30174) | 96.43th | v4 (v2025.03.14) |
| Jul 1, 2025 | 19.48% (0.19479) | 95.14th | v4 (v2025.03.14) |
| Mar 30, 2025 | 30.17% (0.30174) | 96.28th | v4 (v2025.03.14) |
| Mar 29, 2025 | 59.89% (0.59891) | 97.51th | v4 (v2025.03.14) |
| Mar 28, 2025 | 30.17% (0.30174) | 96.27th | v4 (v2025.03.14) |
| Mar 27, 2025 | 59.89% (0.59891) | 98.00th | v4 (v2025.03.14) |
| Mar 23, 2025 | 49.69% (0.49692) | 97.47th | v4 (v2025.03.14) |
| Mar 20, 2025 | 43.28% (0.43284) | 97.25th | v4 (v2025.03.14) |
| Mar 19, 2025 | 48.92% (0.48924) | 97.44th | v4 (v2025.03.14) |
| Mar 17, 2025 | 47.41% (0.47414) | 97.41th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.02% (0.01020) | 84.46th | v3 (v2023.03.01) |
| Jul 17, 2024 | 1.02% (0.01020) | 83.95th | v3 (v2023.03.01) |
| May 28, 2024 | 0.81% (0.00811) | 81.75th | v3 (v2023.03.01) |
| Feb 21, 2024 | 0.99% (0.00991) | 83.09th | v3 (v2023.03.01) |
| Feb 9, 2024 | 1.20% (0.01197) | 84.72th | v3 (v2023.03.01) |
| Oct 5, 2023 | 2.73% (0.02730) | 89.31th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.68% (0.02684) | 88.78th | v3 (v2023.03.01) |
| Mar 6, 2023 | 17.17% (0.17166) | 96.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 17.17% (0.17166) | 95.87th | v2 (v2022.01.01) |
| Feb 4, 2022 | 17.17% (0.17166) | 93.10th | v2 (v2022.01.01) |
Weaknesses (1)
References (9)
- http://it.slashdot.org/comments.pl?sid=4821073&cid=46310187 x_refsource_MISCIssue Tracking
- http://support.apple.com/kb/HT6146 x_refsource_CONFIRMVendor Advisory
- http://support.apple.com/kb/HT6147 x_refsource_CONFIRMVendor Advisory
- http://support.apple.com/kb/HT6148 x_refsource_CONFIRMVendor Advisory
- http://support.apple.com/kb/HT6150 x_refsource_CONFIRMVendor Advisory
- https://news.ycombinator.com/item?id=7281378 x_refsource_MISCExploitIssue Tracking
- https://www.cs.columbia.edu/~smb/blog/2014-02/2014-02-23.html x_refsource_MISCExploit
- https://www.cs.columbia.edu/~smb/blog/2014-02/2014-02-24.html x_refsource_MISCExploit
- https://www.imperialviolet.org/2014/02/22/applebug.html x_refsource_MISCExploit
| Link | Providers | Tags |
|---|---|---|
| http://it.slashdot.org/comments.pl?sid=4821073&cid=46310187 | x_refsource_MISCIssue Tracking | |
| http://support.apple.com/kb/HT6146 | x_refsource_CONFIRMVendor Advisory | |
| http://support.apple.com/kb/HT6147 | x_refsource_CONFIRMVendor Advisory | |
| http://support.apple.com/kb/HT6148 | x_refsource_CONFIRMVendor Advisory | |
| http://support.apple.com/kb/HT6150 | x_refsource_CONFIRMVendor Advisory | |
| https://news.ycombinator.com/item?id=7281378 | x_refsource_MISCExploitIssue Tracking | |
| https://www.cs.columbia.edu/~smb/blog/2014-02/2014-02-23.html | x_refsource_MISCExploit | |
| https://www.cs.columbia.edu/~smb/blog/2014-02/2014-02-24.html | x_refsource_MISCExploit | |
| https://www.imperialviolet.org/2014/02/22/applebug.html | x_refsource_MISCExploit |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner apple
Published Feb 22, 2014
Updated Aug 6, 2024
Reserved Jan 8, 2014
Link CVE-2014-1266
CISA Vulnrichment
Updated n/a