CVE-1999-0599

NONECVSS 0.0

0.0

A network intrusion detection system (IDS) does not properly handle packets with improper sequence numbers.

CVSS v3: —
EG Score: —
EPSS: 65.5%
KEV: Not listed

Published

January 1, 1999

Last Modified

April 16, 2026

References (2)

cve@mitrehttp://www.robertgraham.com/mirror/Ptacek-Newsham-Evasion-98.html
af854a3a-2127-422b-91ae-364da2661108http://www.robertgraham.com/mirror/Ptacek-Newsham-Evasion-98.html

Data Freshness Timeline

(refreshed 13× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-29 13:40 UTCepss_batch
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Frequently asked(4)

What is CVE-1999-0599?

CVE-1999-0599 is a none vulnerability published on January 1, 1999. A network intrusion detection system (IDS) does not properly handle packets with improper sequence numbers.

When was CVE-1999-0599 disclosed?

CVE-1999-0599 was first published in the National Vulnerability Database on January 1, 1999, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-1999-0599 actively exploited?

CVE-1999-0599 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 65.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-1999-0599?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-1999-0599, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-1999-0599

📅 Published

🔄 Last Modified

🔗 References (2)