How severe is CVE-1999-0680?

CVE-1999-0680 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-1999-0680 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0680?

CVE-1999-0680 affects Microsoft Terminal Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-1999-0680?

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

When was CVE-1999-0680 published?

CVE-1999-0680 was published on 1999-08-09 and last updated on 2026-06-16.

CVE-1999-0680

CVE-1999-0680 is a medium-severity vulnerability in Microsoft Terminal Server 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. The underlying weakness is classified as CWE-287.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Microsoft Terminal Server
Published: 1999-08-09
Last modified: 2026-06-16

Description

Windows NT Terminal Server performs extra work when a client opens a new connection but before it is authenticated, allowing for a denial of service.

Frequently asked questions

What is CVE-1999-0680?: Windows NT Terminal Server performs extra work when a client opens a new connection but before it is authenticated, allowing for a denial of service.
How severe is CVE-1999-0680?: CVE-1999-0680 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-1999-0680 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0680?: CVE-1999-0680 affects Microsoft Terminal Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-1999-0680?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-1999-0680 published?: CVE-1999-0680 was published on 1999-08-09 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:microsoft:terminal_server:*:*:*:*:*:*:*:*

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