What’s Vulnerable › Vulnerabilities

CVE-2006-6397

• Severity: medium (CVSS 4.4 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2006-12-08 · updated 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

Affected products

• FreeBSD: 6.2-stable
• Netbsd: 2.0.4
• OpenBSD: all versions

References

• http://www.securityfocus.com/archive/1/452322/100/200/threaded
• http://www.securityfocus.com/archive/1/452330/100/200/threaded
• http://www.securityfocus.com/archive/1/452374/100/200/threaded
• http://www.securityfocus.com/archive/1/452470/100/200/threaded
• http://www.securityfocus.com/archive/1/452322/100/200/threaded
• http://www.securityfocus.com/archive/1/452330/100/200/threaded
• http://www.securityfocus.com/archive/1/452374/100/200/threaded
• http://www.securityfocus.com/archive/1/452470/100/200/threaded

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