What’s Vulnerable › Vulnerabilities

CVE-1999-0656

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 1999-01-01 · updated 2026-06-16
• Weakness: CWE-16

Description

The ugidd RPC interface, by design, allows remote attackers to enumerate valid usernames by specifying arbitrary UIDs that ugidd maps to local user and group names.

Affected products

• Linux kernel: all versions

References

• http://ca.com/au/securityadvisor/vulninfo/Vuln.aspx?ID=1638
• https://exchange.xforce.ibmcloud.com/vulnerabilities/348
• http://ca.com/au/securityadvisor/vulninfo/Vuln.aspx?ID=1638
• https://exchange.xforce.ibmcloud.com/vulnerabilities/348

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