How severe is CVE-1999-0856?

CVE-1999-0856 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-1999-0856 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0856?

CVE-1999-0856 affects Slackware Slackware Linux. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-1999-0856?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-1999-0856 published?

CVE-1999-0856 was published on 1999-12-01 and last updated on 2026-06-16.

CVE-1999-0856

CVE-1999-0856 is a medium-severity vulnerability in Slackware Slackware Linux with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Slackware Slackware Linux
Published: 1999-12-01
Last modified: 2026-06-16

Description

login in Slackware 7.0 allows remote attackers to identify valid users on the system by reporting an encryption error when an account is locked or does not exist.

Frequently asked questions

What is CVE-1999-0856?: login in Slackware 7.0 allows remote attackers to identify valid users on the system by reporting an encryption error when an account is locked or does not exist.
How severe is CVE-1999-0856?: CVE-1999-0856 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-1999-0856 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0856?: CVE-1999-0856 affects Slackware Slackware Linux. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-1999-0856?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-1999-0856 published?: CVE-1999-0856 was published on 1999-12-01 and last updated on 2026-06-16.

References

https://marc.info/?l=bugtraq&m=94416739411280&w=2

Affected products (1)

cpe:2.3:o:slackware:slackware_linux:7.0:*:*:*:*:*:*:*

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