How severe is CVE-2010-2020?

CVE-2010-2020 has a CVSS 2.0 base score of 6.9, rated medium severity.

Is CVE-2010-2020 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-2020?

CVE-2010-2020 primarily affects Freebsd. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-2020?

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

When was CVE-2010-2020 published?

CVE-2010-2020 was published on 2010-05-28 and last updated on 2026-06-16.

CVE-2010-2020

CVE-2010-2020 is a medium-severity vulnerability in Freebsd with a CVSS 2.0 base score of 6.9. 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 6.9)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Freebsd
Published: 2010-05-28
Last modified: 2026-06-16

Description

sys/nfsclient/nfs_vfsops.c in the NFS client in the kernel in FreeBSD 7.2 through 8.1-PRERELEASE, when vfs.usermount is enabled, does not validate the length of a certain fhsize parameter, which allows local users to gain privileges via a crafted mount request.

Frequently asked questions

What is CVE-2010-2020?: sys/nfsclient/nfs_vfsops.c in the NFS client in the kernel in FreeBSD 7.2 through 8.1-PRERELEASE, when vfs.usermount is enabled, does not validate the length of a certain fhsize parameter, which allows local users to gain privileges via a crafted mount request.
How severe is CVE-2010-2020?: CVE-2010-2020 has a CVSS 2.0 base score of 6.9, rated medium severity.
Is CVE-2010-2020 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-2020?: CVE-2010-2020 primarily affects Freebsd. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-2020?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-2020 published?: CVE-2010-2020 was published on 2010-05-28 and last updated on 2026-06-16.

References

Affected products (5)

cpe:2.3:o:freebsd:freebsd:7.2:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.2:pre-release:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.2:stable:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:8.0:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:8.1-prerelease:*:*:*:*:*:*:*

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