How severe is CVE-1999-0344?

CVE-1999-0344 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-1999-0344 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0344?

CVE-1999-0344 primarily affects Microsoft Windows Nt. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-0344?

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-1999-0344 published?

CVE-1999-0344 was published on 1998-08-01 and last updated on 2026-06-16.

CVE-1999-0344

CVE-1999-0344 is a high-severity vulnerability in Microsoft Windows Nt 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. The underlying weakness is classified as CWE-264.

Key facts

Severity: High (CVSS 2.0 base score 7.2)
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Microsoft Windows Nt
Published: 1998-08-01
Last modified: 2026-06-16

Description

NT users can gain debug-level access on a system process using the Sechole exploit.

Frequently asked questions

What is CVE-1999-0344?: NT users can gain debug-level access on a system process using the Sechole exploit.
How severe is CVE-1999-0344?: CVE-1999-0344 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-1999-0344 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0344?: CVE-1999-0344 primarily affects Microsoft Windows Nt. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0344?: 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-1999-0344 published?: CVE-1999-0344 was published on 1998-08-01 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:o:microsoft:windows_nt:3.5.1:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:*:*:*:*:*:*:*

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