CVE-2001-1422

NONECVSS 0.0

0.0

WinVNC 3.3.3 and earlier generates the same challenge string for multiple connections, which allows remote attackers to bypass VNC authentication by sniffing the challenge and response of other users.

CVSS v3: —
EG Score: —
EPSS: 79.6%
KEV: Not listed

Published

January 23, 2001

Last Modified

April 16, 2026

References (8)

cve@mitrehttp://www.kb.cert.org/vuls/id/303080
cve@mitrehttp://www.securityfocus.com/bid/2275
cve@mitrehttp://www1.corest.com/common/showdoc.php?idxseccion=10&idx=117
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/5992
af854a3a-2127-422b-91ae-364da2661108http://www.kb.cert.org/vuls/id/303080
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/2275
af854a3a-2127-422b-91ae-364da2661108http://www1.corest.com/common/showdoc.php?idxseccion=10&idx=117
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/5992

Data Freshness Timeline

(refreshed 11× in last 7d / 18× 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
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
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2026-05-24 16:42 UTCepss_batch
2026-05-22 21:15 UTCepss_batch
2026-05-21 22:38 UTCepss_batch
2026-05-20 22:36 UTCepss_batch
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2026-05-18 21:29 UTCepss_batch
2026-05-18 21:29 UTCepss_batch

Frequently asked(4)

What is CVE-2001-1422?

CVE-2001-1422 is a none vulnerability published on January 23, 2001. WinVNC 3.3.3 and earlier generates the same challenge string for multiple connections, which allows remote attackers to bypass VNC authentication by sniffing the challenge and response of other users.

When was CVE-2001-1422 disclosed?

CVE-2001-1422 was first published in the National Vulnerability Database on January 23, 2001, 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-2001-1422 actively exploited?

CVE-2001-1422 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 79.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2001-1422?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2001-1422, 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.

Dependency Blast Radius

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CVE-2001-1422

📅 Published

🔄 Last Modified

🔗 References (8)