The TLS protocol 1.2 and earlier, when a DHE_EXPORT ciphersuite is enabled on a server but not on a client, does not properly convey a DHE_EXPORT choice, which allows man-in-the-middle attackers to conduct cipher-downgrade attacks by rewriting a ClientHello with DHE replaced by DHE_EXPORT and then rewriting a ServerHello with DHE_EXPORT replaced by DHE, aka the "Logjam" issue.

Published: 2015-05-21

CVSS: 4.3

CVSS Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Download Exploit for CVE-2015-4000 here:

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https://tatramed.sk/exploit-955-cve-2025-50071/

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