How severe is CVE-2006-6397?

CVE-2006-6397 has a CVSS 2.0 base score of 4.4, rated medium severity.

Is CVE-2006-6397 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-6397?

CVE-2006-6397 primarily affects Freebsd. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2006-6397?

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

When was CVE-2006-6397 published?

CVE-2006-6397 was published on 2006-12-08 and last updated on 2026-06-16.

CVE-2006-6397

CVE-2006-6397 is a medium-severity vulnerability in Freebsd with a CVSS 2.0 base score of 4.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 4.4)
EPSS exploit prediction: 0% (18th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Freebsd
Published: 2006-12-08
Last modified: 2026-06-16

Description

Integer overflow in banner/banner.c in FreeBSD, NetBSD, and OpenBSD might allow local users to modify memory via a long banner. NOTE: CVE and multiple third parties dispute this issue. Since banner is not setuid, an exploit would not cross privilege boundaries in normal operations. This issue is not a vulnerability

Frequently asked questions

What is CVE-2006-6397?: Integer overflow in banner/banner.c in FreeBSD, NetBSD, and OpenBSD might allow local users to modify memory via a long banner. NOTE: CVE and multiple third parties dispute this issue. Since banner is not setuid, an exploit would not cross privilege boundaries in normal operations. This issue is not a vulnerability
How severe is CVE-2006-6397?: CVE-2006-6397 has a CVSS 2.0 base score of 4.4, rated medium severity.
Is CVE-2006-6397 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-6397?: CVE-2006-6397 primarily affects Freebsd. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-6397?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-6397 published?: CVE-2006-6397 was published on 2006-12-08 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:o:freebsd:freebsd:6.2:stable:*:*:*:*:*:*
cpe:2.3:o:netbsd:netbsd:2.0.4:*:*:*:*:*:*:*
cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*

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