How severe is CVE-1999-0693?

CVE-1999-0693 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-1999-0693 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-1999-0693?

CVE-1999-0693 primarily affects Hp Hp-ux. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-0693?

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-1999-0693 published?

CVE-1999-0693 was published on 2000-03-02 and last updated on 2026-06-16.

CVE-1999-0693

CVE-1999-0693 is a high-severity vulnerability in Hp Hp-ux with a CVSS 2.0 base score of 7.2. 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 7.2)
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Hp Hp-ux
Published: 2000-03-02
Last modified: 2026-06-16

Description

Buffer overflow in TT_SESSION environment variable in ToolTalk shared library allows local users to gain root privileges.

Frequently asked questions

What is CVE-1999-0693?: Buffer overflow in TT_SESSION environment variable in ToolTalk shared library allows local users to gain root privileges.
How severe is CVE-1999-0693?: CVE-1999-0693 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-1999-0693 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-1999-0693?: CVE-1999-0693 primarily affects Hp Hp-ux. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0693?: 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-1999-0693 published?: CVE-1999-0693 was published on 2000-03-02 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:o:hp:hp-ux:10:*:*:*:*:*:*:*
cpe:2.3:o:hp:hp-ux:11:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:4:*:*:*:*:*:*:*
cpe:2.3:o:sco:unixware:7:*:*:*:*:*:*:*

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