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01 Record

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 DHE_EXPORT choice, which allows man-in-the-middle attackers to

LowPUBLISHEDCNA: mitre
CNA base score3.7 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
View raw JSON

02 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

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
99.86% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 99.9% of scored records. A rank, not a probability.
NVD base score
3.7 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2015-05-21 00:00Z11 YR AGO
Last updated
2026-05-27 16:22Z5 MO AGO
Reserved
2015-05-15
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Low (CVSS 3.7)
CNA CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Weaknesses
  • CWE-295Improper Certificate ValidationBase
  • CWE-310
  • CWE-327Use of a Broken or Risky Cryptographic AlgorithmClass
Data version
5.2
Document digest
a97eb6a57d734e2234c7645aba59d40f9785c9d4abe051c4099a29ac6c5e5462

05 Affected products

VendorProductVersionsPlatforms
appleiphone_osNot specified—
applemac_os_xNot specified—
applesafariNot specified—
canonicalubuntu_linuxNot specified—
debiandebian_linuxNot specified—
googlechromeNot specified—
hphp-uxNot specified—
ibmcontent_managerNot specified—
microsoftinternet_explorerNot specified—
mozillafirefoxNot specified—
mozillafirefox_esrNot specified—
mozillafirefox_osNot specified—
mozillanetwork_security_servicesNot specified—
mozillaseamonkeyNot specified—
mozillathunderbirdNot specified—
opensslopensslNot specified—
operaopera_browserNot specified—
oraclejdkNot specified—
oraclejreNot specified—
oraclejrockitNot specified—
oraclesparc-opl_service_processorNot specified—
redhatenterprise_linuxNot specified—
redhatjboss_enterprise_application_platformNot specified—
redhatjboss_enterprise_web_serverNot specified—
redhatnetwork_satelliteNot specified—
redhatrhel_extrasNot specified—
redhatrhel_extras_oracle_javaNot specified—
suselinux_enterprise_desktopNot specified—
suselinux_enterprise_serverNot specified—
suselinux_enterprise_software_development_kitNot specified—
susesuse_linux_enterprise_serverNot specified—

06 References

07 Fixed in

Debian 12

  • nss
    Fixed in 2:3.19.1-1
  • openssl
    Fixed in 1.0.2b-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • nss
    Fixed in 2:3.19.1-1
  • openssl
    Fixed in 1.0.2b-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • nss
    Fixed in 2:3.19.1-1
  • openssl
    Fixed in 1.0.2b-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 14.04 LTS

  • firefox
    Fixed in 39.0+build5-0ubuntu0.14.04.1
  • nss
    Fixed in 2:3.19.2-0ubuntu0.14.04.1
  • openjdk-6
    Fixed in 6b36-1.13.8-0ubuntu1~14.04
  • openjdk-7
    Fixed in 7u79-2.5.6-0ubuntu1.14.04.1
  • openssl
    Fixed in 1.0.1f-1ubuntu2.12
  • thunderbird
    Fixed in 1:31.8.0+build1-0ubuntu0.14.04.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • nss
    Fixed in 2:3.19.2-1ubuntu1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.