CVE-1999-0969

MEDIUMEPSS 96th pctl

5.0

CVSS v2

Description

The Windows NT RPC service allows remote attackers to conduct a denial of service using spoofed malformed RPC packets which generate an error message that is sent to the spoofed host, potentially setting up a loop, aka Snork.

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

13.45%probability of exploitation in 30 days

96thpercentile

Very high risk: more likely to be exploited than 96% of all known CVEs.

References

Other references2

Common questions

How do I fix CVE-1999-0969?

No published fix for CVE-1999-0969 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

Is CVE-1999-0969 being actively exploited?

Not that we know of. CVE-1999-0969 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 13.5% is the estimated probability that it will be exploited in the next 30 days. That is higher than 96% of all scored CVEs.

How severe is CVE-1999-0969?

CVE-1999-0969 has a CVSS v2 base score of 5.0, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-16.