VulnerabilityModified
CVE-2001-1422
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.
HIGH 7.5EPSS 2.06%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.06%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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 2.0
- 7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
- EPSS
- 2.06% probability · 80th percentile
- CISA KEV
- Not listed
- Affected
- att/winvnc
- Source
- cve@mitre.org
References
- http://www.kb.cert.org/vuls/id/303080Third Party Advisory, US Government Resource
- http://www.securityfocus.com/bid/2275Vendor Advisory
- http://www1.corest.com/common/showdoc.php?idxseccion=10&idx=117Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/5992
- http://www.kb.cert.org/vuls/id/303080Third Party Advisory, US Government Resource
- http://www.securityfocus.com/bid/2275Vendor Advisory
- http://www1.corest.com/common/showdoc.php?idxseccion=10&idx=117Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/5992
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.