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CVE-2012-0027

20
FAUCET Score

CVE-2012-0027 describes a denial-of-service vulnerability in OpenSSL versions prior to 1.0.0f, specifically within the GOST ENGINE's handling of invalid parameters for the GOST block cipher. This flaw allows remote attackers to crash the daemon via crafted TLS client data. With a CVSS score of 5.0 (AV:N/AC:L/Au:N/C:N/I:N/A:P), it indicates a network-exploitable vulnerability with low access complexity, requiring no authentication, and resulting in partial availability impact. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.0.0eCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
0.9.1cCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.1c:*:*:*:*:*:*:*
0.9.2bCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.2b:*:*:*:*:*:*:*
0.9.3CPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.3:*:*:*:*:*:*:*
0.9.3aCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.3a:*:*:*:*:*:*:*

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
4.99%
Probability of exploitation in next 30 days
EPSS Percentile
91.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0499 is in the 88th percentile among its peer group of 23,703 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-2012-0027Moderate

openssl: invalid GOST parameters DoS attack

Jan 4, 2012

References

h20000.www2.hp.com / bizsupport/TechSupport/Document.jsp
lists.opensuse.org / opensuse-security-announce/2012-01/msg00017.html
osvdb.org / 78191
secunia.com / advisories/57353
www-01.ibm.com / support/docview.wss
mandriva.com / security/advisories
openssl.org / news/secadv_20120104.txt
Vendor Advisory