How severe is CVE-2009-3517?

CVE-2009-3517 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2009-3517 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-3517?

CVE-2009-3517 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-2009-3517?

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

When was CVE-2009-3517 published?

CVE-2009-3517 was published on 2009-10-01 and last updated on 2026-06-16.

CVE-2009-3517

CVE-2009-3517 is a critical-severity vulnerability in Ibm Aix with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ibm Aix
Published: 2009-10-01
Last modified: 2026-06-16

Description

nfs.ext in IBM AIX 5.3.x through 5.3.9 and 6.1.0 through 6.1.2 does not properly use the nfs_portmon setting, which allows remote attackers to bypass intended access restrictions for NFSv4 shares via unspecified vectors.

Frequently asked questions

What is CVE-2009-3517?: nfs.ext in IBM AIX 5.3.x through 5.3.9 and 6.1.0 through 6.1.2 does not properly use the nfs_portmon setting, which allows remote attackers to bypass intended access restrictions for NFSv4 shares via unspecified vectors.
How severe is CVE-2009-3517?: CVE-2009-3517 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2009-3517 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-3517?: CVE-2009-3517 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-2009-3517?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2009-3517 published?: CVE-2009-3517 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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