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CVE-2015-4000

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…

Low3.7EPSS 99.9%
Published
Updated
Reserved
Assigned by
mitre

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.

Scores

CVSS scores of CVE-2015-4000, by who scored it
Scored byCVSSScoreVector
CISA-ADPADP (enrichment)3.1Low3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
NVDNVD · Modified3.1Low3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS (exploitation in 30 days)
99.9% · top 0.1% of all CVEs (4 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.7.

Weakness

Affected products

  • n/a

    • affected n/a

References (217)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .