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CVE-2012-2686

52
FAUCET Score

CVE-2012-2686 describes a denial-of-service vulnerability in OpenSSL versions 1.0.1 through 1.0.1d, specifically within the AES-NI functionality of its TLS 1.1 and 1.2 implementations. This flaw allows remote unauthenticated attackers to crash an application by sending specially crafted CBC data. The vulnerability has a CVSS score of 5.0, indicating a medium severity due to its low attack complexity and potential for partial availability impact. While not in the CISA KEV catalog, a Metasploit module exists for exploitation, and its EPSS score suggests a higher-than-average probability of exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.1CPE matchmatch criteria
cpe:2.3:a:openssl:openssl:1.0.1:*:*:*:*:*:*:*
1.0.1aCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:1.0.1a:*:*:*:*:*:*:*
1.0.1bCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:1.0.1b:*:*:*:*:*:*:*
1.0.1cCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:1.0.1c:*:*:*:*:*:*:*

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
39.59%
Probability of exploitation in next 30 days
EPSS Percentile
98.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Metasploit: OpenSSL TLS 1.1 and 1.2 AES-NI DoS · Feb 5, 2013
This CVE's current EPSS score of 0.3959 is in the 99th percentile among its peer group of 23,701 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-2012-2686Moderate

openssl: DoS due to improper handling of CBC ciphersuites in TLS 1.1/1.2 on AES-NI supporting platforms

Feb 5, 2013

References

git.openssl.org / gitweb
lists.apple.com / archives/security-announce/2013/Sep/msg00002.html
marc.info
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/55108
secunia.com / advisories/55139
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18868
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19660
support.hpe.com / hpsc/doc/public/display
support.apple.com / kb/HT5880
openssl.org / news/secadv_20130204.txt
Vendor Advisory
securityfocus.com / bid/57755