How severe is CVE-1999-1311?

CVE-1999-1311 has a CVSS 2.0 base score of 4.6, rated medium severity.

Is CVE-1999-1311 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-1311?

CVE-1999-1311 primarily affects Hp Hp-ux. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-1311?

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

When was CVE-1999-1311 published?

CVE-1999-1311 was published on 1997-01-07 and last updated on 2026-06-16.

CVE-1999-1311

CVE-1999-1311 is a medium-severity vulnerability in Hp Hp-ux with a CVSS 2.0 base score of 4.6. 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 4.6)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Hp Hp-ux
Published: 1997-01-07
Last modified: 2026-06-16

Description

Vulnerability in dtlogin and dtsession in HP-UX 10.20 and 10.10 allows local users to bypass authentication and gain privileges.

Frequently asked questions

What is CVE-1999-1311?: Vulnerability in dtlogin and dtsession in HP-UX 10.20 and 10.10 allows local users to bypass authentication and gain privileges.
How severe is CVE-1999-1311?: CVE-1999-1311 has a CVSS 2.0 base score of 4.6, rated medium severity.
Is CVE-1999-1311 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-1311?: CVE-1999-1311 primarily affects Hp Hp-ux. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-1311?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-1999-1311 published?: CVE-1999-1311 was published on 1997-01-07 and last updated on 2026-06-16.

References

http://ciac.llnl.gov/ciac/bulletins/h-21.shtml

Affected products (2)

cpe:2.3:o:hp:hp-ux:10.10:*:*:*:*:*:*:*
cpe:2.3:o:hp:hp-ux:10.20:*:*:*:*:*:*:*

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