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CVE-2011-3210

20
FAUCET Score

CVE-2011-3210 describes a denial-of-service vulnerability in OpenSSL versions 0.9.8 through 0.9.8r and 1.0.x before 1.0.0e. This flaw stems from a lack of thread safety in the ephemeral ECDH ciphersuite functionality, allowing remote attackers to crash the daemon by sending out-of-order TLS handshake messages. With a CVSS score of 5.0, this vulnerability is considered medium severity, requiring no authentication and having a low attack complexity, but only leading to a denial of service. There is no evidence of active exploitation, public 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:*:*:*:*:*:*:*
0.9.8aCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.8a:*:*:*:*:*:*:*
0.9.8bCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.8b:*:*:*:*:*:*:*
0.9.8cCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.8c:*:*:*:*:*:*:*
0.9.8dCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.8d:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.56%
Probability of exploitation in next 30 days
EPSS Percentile
90.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0456 is in the 87th percentile among its peer group of 23,705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 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 Advisories (1)

redhatCVE-2011-3210Moderate

openssl: TLS ephemeral ECDH crashes in OpenSSL

Sep 6, 2011

References

cvs.openssl.org / chngview
Patch
lists.apple.com / archives/security-announce/2013/Jun/msg00000.html
marc.info
marc.info
openssl.org / news/secadv_20110906.txt
Vendor Advisory
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/57353
support.apple.com / kb/HT5784
www-01.ibm.com / support/docview.wss
mandriva.com / security/advisories
securitytracker.com / id