CVE-2012-0027

CVE-2012-0027 is a medium-severity vulnerability in Openssl with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

Description

The GOST ENGINE in OpenSSL before 1.0.0f does not properly handle invalid parameters for the GOST block cipher, which allows remote attackers to cause a denial of service (daemon crash) via crafted data from a TLS client.

Frequently asked questions

What is CVE-2012-0027?
The GOST ENGINE in OpenSSL before 1.0.0f does not properly handle invalid parameters for the GOST block cipher, which allows remote attackers to cause a denial of service (daemon crash) via crafted data from a TLS client.
How severe is CVE-2012-0027?
CVE-2012-0027 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2012-0027 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-0027?
CVE-2012-0027 primarily affects Openssl. In total, 67 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-0027?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-0027 published?
CVE-2012-0027 was published on 2012-01-06 and last updated on 2026-06-16.

References

Affected products (67)

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Threat intelligence

Threat-intel indicators referencing this CVE: