How severe is CVE-2009-3516?

CVE-2009-3516 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-2009-3516 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-3516?

CVE-2009-3516 primarily affects Ibm Aix. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-3516?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2009-3516 published?

CVE-2009-3516 was published on 2009-10-01 and last updated on 2026-06-16.

CVE-2009-3516

CVE-2009-3516 is a high-severity vulnerability in Ibm Aix with a CVSS 2.0 base score of 7.2. 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-255.

Key facts

Severity: High (CVSS 2.0 base score 7.2)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-255
Affected product: Ibm Aix
Published: 2009-10-01
Last modified: 2026-06-16

Description

gssd in IBM AIX 5.3.x through 5.3.9 and 6.1.0 through 6.1.2 does not properly handle the NFSv4 Kerberos credential cache, which allows local users to bypass intended access restrictions for Kerberized NFSv4 shares via unspecified vectors.

Frequently asked questions

What is CVE-2009-3516?: gssd in IBM AIX 5.3.x through 5.3.9 and 6.1.0 through 6.1.2 does not properly handle the NFSv4 Kerberos credential cache, which allows local users to bypass intended access restrictions for Kerberized NFSv4 shares via unspecified vectors.
How severe is CVE-2009-3516?: CVE-2009-3516 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-2009-3516 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-3516?: CVE-2009-3516 primarily affects Ibm Aix. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-3516?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2009-3516 published?: CVE-2009-3516 was published on 2009-10-01 and last updated on 2026-06-16.

References

Affected products (7)

cpe:2.3:o:ibm:aix:5.3.0:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:5.3.7:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:5.3.8:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:6.1:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:6.1.0:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:6.1.1:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:6.1.2:*:*:*:*:*:*:*

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