VYPR
Low severity3.7NVD Advisory· Published May 21, 2015· Updated Jun 17, 2026

CVE-2015-4000

CVE-2015-4000

Description

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.

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Affected products

283

Patches

Vulnerability mechanics

References

217

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