CVE-1999-0656

Name: CVE-1999-0656
Creator: NVD / NIST
Published: 1999-01-01T05:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.55%

Last modified Jun 16, 2026

CVE-1999-0656 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.55% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

1.55%

72.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-16

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	All versions

References

Timeline

Published: Jan 1, 1999
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-1999-0656?

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.

How severe is CVE-1999-0656?

Severity scoring for CVE-1999-0656 is pending analysis. The EPSS model estimates a 1.55% probability of exploitation in the next 30 days.

How do I fix CVE-1999-0656?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-1999-0656?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST