How severe is CVE-1999-0999?

CVE-1999-0999 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-1999-0999 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 22% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0999?

CVE-1999-0999 affects Microsoft Sql Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-1999-0999?

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

When was CVE-1999-0999 published?

CVE-1999-0999 was published on 1999-11-19 and last updated on 2026-06-16.

CVE-1999-0999

CVE-1999-0999 is a medium-severity vulnerability in Microsoft Sql Server with a CVSS 2.0 base score of 4.3. Its EPSS exploit-prediction score of 22% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 22% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Microsoft Sql Server
Published: 1999-11-19
Last modified: 2026-06-16

Description

Microsoft SQL 7.0 server allows a remote attacker to cause a denial of service via a malformed TDS packet.

Frequently asked questions

What is CVE-1999-0999?: Microsoft SQL 7.0 server allows a remote attacker to cause a denial of service via a malformed TDS packet.
How severe is CVE-1999-0999?: CVE-1999-0999 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-1999-0999 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 22% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0999?: CVE-1999-0999 affects Microsoft Sql Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-1999-0999?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-1999-0999 published?: CVE-1999-0999 was published on 1999-11-19 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:microsoft:sql_server:7.0:*:*:*:*:*:*:*

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