CVE-2015-4000

LowCVSS 3.7/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 3.7/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Weakness enumeration

Affected software

VendorProductVersions
n/an/an/a

References

Timeline

Published
May 21, 2015
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2015-4000: Low severity, CVSS 3.7 | Vulnix