CVE-2001-1422 json
WinVNC 3.3.3 and earlier generates the same challenge string for multiple connections, which allows remote attackers to bypass VNC authenti…
published 2001-01-23 25 y ago modified 2026-06-16 4 mo ago also EUVD-2001-1402
- cvss
- 7.5
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.1%
- EPSS 2.1% chance of exploitation in 30 days, percentile 81%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
2.06% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
References
-
securityfocus.com
/bid/2275
vdb-entry, vendor-advisory
-
www1.corest.com
/common/showdoc.php?idxseccion=10&idx=117
vendor-advisory
-
kb.cert.org
/vuls/id/303080
third-party-advisory, us-government-resource
-
exchange.xforce.ibmcloud.com
/vulnerabilities/5992
vdb-entry
Sources
- CVE List CVE-2001-1422
- NVD CVE-2001-1422
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.