How severe is CVE-2013-3266?

CVE-2013-3266 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2013-3266 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-3266?

CVE-2013-3266 primarily affects Freebsd. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-3266?

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-2013-3266 published?

CVE-2013-3266 was published on 2013-05-02 and last updated on 2026-06-16.

CVE-2013-3266

CVE-2013-3266 is a high-severity vulnerability in Freebsd with a CVSS 2.0 base score of 7.5. 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: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Freebsd
Published: 2013-05-02
Last modified: 2026-06-16

Description

The nfsrvd_readdir function in sys/fs/nfsserver/nfs_nfsdport.c in the new NFS server in FreeBSD 8.0 through 9.1-RELEASE-p3 does not verify that a READDIR request is for a directory node, which allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code by specifying a plain file instead of a directory.

Frequently asked questions

What is CVE-2013-3266?: The nfsrvd_readdir function in sys/fs/nfsserver/nfs_nfsdport.c in the new NFS server in FreeBSD 8.0 through 9.1-RELEASE-p3 does not verify that a READDIR request is for a directory node, which allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code by specifying a plain file instead of a directory.
How severe is CVE-2013-3266?: CVE-2013-3266 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2013-3266 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-3266?: CVE-2013-3266 primarily affects Freebsd. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-3266?: 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-2013-3266 published?: CVE-2013-3266 was published on 2013-05-02 and last updated on 2026-06-16.

References

Affected products (6)

cpe:2.3:o:freebsd:freebsd:8.0:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:8.1:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:8.2:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:8.3:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:9.0:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:9.1:*:*:*:*:*:*:*

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