How severe is CVE-2002-0557?

CVE-2002-0557 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2002-0557 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2002-0557?

CVE-2002-0557 affects Openbsd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2002-0557?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2002-0557 published?

CVE-2002-0557 was published on 2002-07-03 and last updated on 2026-06-16.

CVE-2002-0557

CVE-2002-0557 is a high-severity vulnerability in Openbsd with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Openbsd
Published: 2002-07-03
Last modified: 2026-06-16

Description

Vulnerability in OpenBSD 3.0, when using YP with netgroups in the password database, causes (1) rexec or (2) rsh to run another user's shell, or (3) atrun to change to a different user's directory, possibly due to memory allocation failures or an incorrect call to auth_approval().

Frequently asked questions

What is CVE-2002-0557?: Vulnerability in OpenBSD 3.0, when using YP with netgroups in the password database, causes (1) rexec or (2) rsh to run another user's shell, or (3) atrun to change to a different user's directory, possibly due to memory allocation failures or an incorrect call to auth_approval().
How severe is CVE-2002-0557?: CVE-2002-0557 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2002-0557 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2002-0557?: CVE-2002-0557 affects Openbsd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2002-0557?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2002-0557 published?: CVE-2002-0557 was published on 2002-07-03 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:openbsd:openbsd:3.0:*:*:*:*:*:*:*

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