How severe is CVE-2010-1322?

CVE-2010-1322 has a CVSS 2.0 base score of 6.5, rated medium severity.

Is CVE-2010-1322 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-1322?

CVE-2010-1322 primarily affects Mit Kerberos 5. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-1322?

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

When was CVE-2010-1322 published?

CVE-2010-1322 was published on 2010-10-07 and last updated on 2026-06-16.

CVE-2010-1322

CVE-2010-1322 is a medium-severity vulnerability in Mit Kerberos 5 with a CVSS 2.0 base score of 6.5. 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 6.5)
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Mit Kerberos 5
Published: 2010-10-07
Last modified: 2026-06-16

Description

The merge_authdata function in kdc_authdata.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8.x before 1.8.4 does not properly manage an index into an authorization-data list, which allows remote attackers to cause a denial of service (daemon crash), or possibly obtain sensitive information, spoof authorization, or execute arbitrary code, via a TGS request that triggers an uninitialized pointer dereference, as demonstrated by a request from a Windows Active Directory client.

Frequently asked questions

What is CVE-2010-1322?: The merge_authdata function in kdc_authdata.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8.x before 1.8.4 does not properly manage an index into an authorization-data list, which allows remote attackers to cause a denial of service (daemon crash), or possibly obtain sensitive information, spoof authorization, or execute arbitrary code, via a TGS request that triggers an uninitialized pointer dereference, as demonstrated by a request from a Windows Active Directory client.
How severe is CVE-2010-1322?: CVE-2010-1322 has a CVSS 2.0 base score of 6.5, rated medium severity.
Is CVE-2010-1322 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-1322?: CVE-2010-1322 primarily affects Mit Kerberos 5. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-1322?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-1322 published?: CVE-2010-1322 was published on 2010-10-07 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:mit:kerberos_5:1.8:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.8.1:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.8.2:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.8.3:*:*:*:*:*:*:*

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