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Servers and applications

CVE-2011-5095

The Diffie-Hellman key-exchange implementation in OpenSSL 0.9.8, when FIPS mode is enabled, does not properly validate a public parameter, which makes it easier for man-in-the-middle attackers to obtain the shared secret key by modifying network traffic, a related issue to CVE-2011-1923.

Severity
Medium 4.0
Published
20 Jun 2012
Last changed
16 Jun 2026
Added to UpHeron
21 Oct 2026
Exploit chance
2.1% in the next 30 daysHigher than 81% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-310
Attack
Over the network · Only under certain conditions · No login needed
Attacker can
Read some data · Change some data
CVSS vector
AV:N/AC:H/Au:N/C:P/I:P/A:N
Sources
NVD

Affected software

SoftwareAffected versions
OpenSSLServers and applications · cpe:a:openssl:openssl
  • Version 0.9.8

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2011-5095
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2011-5095