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CVE-2011-5095

17
FAUCET Score

CVE-2011-5095 describes a vulnerability in OpenSSL versions 0.9.8 when FIPS mode is enabled, specifically within its Diffie-Hellman key-exchange implementation. The flaw lies in the improper validation of a public parameter, making it susceptible to man-in-the-middle attacks. This vulnerability has a CVSS score of 4.0, indicating a medium attack complexity and partial confidentiality and integrity impact, with no availability impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
0.9.8CPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.8:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.0MEDIUM

AV:N/AC:H/Au:N/C:P/I:P/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Exploitability Score
4.9
Impact Score
4.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.09%
Probability of exploitation in next 30 days
EPSS Percentile
79.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0209 is in the 66th percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (2)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: openssl097a
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: openssl098e

Vendor Advisories (1)

redhatCVE-2011-5095Moderate

openssl: weak public value accepted during Diffie Hellman key exchange

Apr 13, 2011

References

discussions.nessus.org / thread/3381
cl.cam.ac.uk / ~rja14/Papers/psandqs.pdf
nessus.org / plugins/index.php