How severe is CVE-2012-2549?

CVE-2012-2549 has a CVSS 2.0 base score of 5.8, rated medium severity.

Is CVE-2012-2549 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-2549?

CVE-2012-2549 primarily affects Microsoft Windows Server 2008. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-2549?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2012-2549 published?

CVE-2012-2549 was published on 2012-12-12 and last updated on 2026-06-16.

CVE-2012-2549

CVE-2012-2549 is a medium-severity vulnerability in Microsoft Windows Server 2008 with a CVSS 2.0 base score of 5.8. 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.8)
EPSS exploit prediction: 10% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Microsoft Windows Server 2008
Published: 2012-12-12
Last modified: 2026-06-16

Description

The IP-HTTPS server in Windows Server 2008 R2 and R2 SP1 and Server 2012 does not properly validate certificates, which allows remote attackers to bypass intended access restrictions via a revoked certificate, aka "Revoked Certificate Bypass Vulnerability."

Frequently asked questions

What is CVE-2012-2549?: The IP-HTTPS server in Windows Server 2008 R2 and R2 SP1 and Server 2012 does not properly validate certificates, which allows remote attackers to bypass intended access restrictions via a revoked certificate, aka "Revoked Certificate Bypass Vulnerability."
How severe is CVE-2012-2549?: CVE-2012-2549 has a CVSS 2.0 base score of 5.8, rated medium severity.
Is CVE-2012-2549 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-2549?: CVE-2012-2549 primarily affects Microsoft Windows Server 2008. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-2549?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-2549 published?: CVE-2012-2549 was published on 2012-12-12 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:o:microsoft:windows_server_2008:*:r2:itanium:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:*:r2:x64:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*

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