CVE-1999-1559

NONECVSS 0.0

0.0

Xylan OmniSwitch before 3.2.6 allows remote attackers to bypass the login prompt via a CTRL-D (control d) character, which locks other users out of the switch because it only supports one session at a time.

CVSS v3: —
EG Score: —
EPSS: 52.0%
KEV: Not listed

Published

March 31, 1999

Last Modified

April 16, 2026

References (4)

cve@mitrehttp://marc.info/?l=bugtraq&m=92299263017061&w=2
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/2064
af854a3a-2127-422b-91ae-364da2661108http://marc.info/?l=bugtraq&m=92299263017061&w=2
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/2064

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.

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Frequently asked(4)

What is CVE-1999-1559?

CVE-1999-1559 is a none vulnerability published on March 31, 1999. Xylan OmniSwitch before 3.2.6 allows remote attackers to bypass the login prompt via a CTRL-D (control d) character, which locks other users out of the switch because it only supports one session at a time.

When was CVE-1999-1559 disclosed?

CVE-1999-1559 was first published in the National Vulnerability Database on March 31, 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-1999-1559 actively exploited?

CVE-1999-1559 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 52.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-1999-1559?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-1999-1559, 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-1999-1559

📅 Published

🔄 Last Modified

🔗 References (4)