How severe is CVE-2008-3531?

CVE-2008-3531 has a CVSS 2.0 base score of 6.9, rated medium severity.

Is CVE-2008-3531 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-3531?

CVE-2008-3531 primarily affects Freebsd. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-3531?

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

When was CVE-2008-3531 published?

CVE-2008-3531 was published on 2008-09-05 and last updated on 2026-06-16.

CVE-2008-3531

CVE-2008-3531 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-119.

Key facts

Severity: Medium (CVSS 2.0 base score 6.9)
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Freebsd
Published: 2008-09-05
Last modified: 2026-06-16

Description

Stack-based buffer overflow in sys/kern/vfs_mount.c in the kernel in FreeBSD 7.0 and 7.1, when vfs.usermount is enabled, allows local users to gain privileges via a crafted (1) mount or (2) nmount system call, related to copying of "user defined data" in "certain error conditions."

Frequently asked questions

What is CVE-2008-3531?: Stack-based buffer overflow in sys/kern/vfs_mount.c in the kernel in FreeBSD 7.0 and 7.1, when vfs.usermount is enabled, allows local users to gain privileges via a crafted (1) mount or (2) nmount system call, related to copying of "user defined data" in "certain error conditions."
How severe is CVE-2008-3531?: CVE-2008-3531 has a CVSS 2.0 base score of 6.9, rated medium severity.
Is CVE-2008-3531 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-3531?: CVE-2008-3531 primarily affects Freebsd. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-3531?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-3531 published?: CVE-2008-3531 was published on 2008-09-05 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:o:freebsd:freebsd:7.0:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.1:*:*:*:*:*:*:*

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