CVE-2012-2551

CVE-2012-2551 is a medium-severity vulnerability in Microsoft Windows 7 with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 27% places it in the 98th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

The server in Kerberos in Microsoft Windows Server 2008 R2 and R2 SP1, and Windows 7 Gold and SP1, allows remote attackers to cause a denial of service (NULL pointer dereference and reboot) via a crafted session request, aka "Kerberos NULL Dereference Vulnerability."

Frequently asked questions

What is CVE-2012-2551?
The server in Kerberos in Microsoft Windows Server 2008 R2 and R2 SP1, and Windows 7 Gold and SP1, allows remote attackers to cause a denial of service (NULL pointer dereference and reboot) via a crafted session request, aka "Kerberos NULL Dereference Vulnerability."
How severe is CVE-2012-2551?
CVE-2012-2551 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2012-2551 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 27% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-2551?
CVE-2012-2551 primarily affects Microsoft Windows 7. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-2551?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-2551 published?
CVE-2012-2551 was published on 2012-10-09 and last updated on 2026-06-16.

References

Affected products (6)

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