What’s Vulnerable › Vulnerabilities

CVE-1999-0863

• Severity: medium (CVSS 4.6 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 1999-11-08 · updated 2026-06-16

Description

Buffer overflow in FreeBSD seyon via HOME environmental variable, -emulator argument, -modems argument, or the GUI.

Affected products

• FreeBSD: 3.3

References

• https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0863
• https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0863

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