What’s Vulnerable › Vulnerabilities

CVE-2015-3774

• Severity: medium (CVSS 4.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2015-08-16 · updated 2026-06-17
• Weakness: CWE-20

Description

The Dictionary app in Apple OS X before 10.10.5 does not use HTTPS, which allows man-in-the-middle attackers to obtain sensitive information by sniffing the network or spoof word definitions by modifying the client-server data stream.

Affected products

• macOS: through 10.10.4

References

• http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html
• http://www.securityfocus.com/bid/76340
• http://www.securitytracker.com/id/1033276
• https://support.apple.com/kb/HT205031
• http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html
• http://www.securityfocus.com/bid/76340
• http://www.securitytracker.com/id/1033276
• https://support.apple.com/kb/HT205031

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