CVE-2001-1422
WinVNC 3.3.3 and earlier generates the same challenge string for multiple connections, which...
CVE-2001-1422 is a high vulnerability (CVSS 7.5) in Att Winvnc, published January 23, 2001. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.06%, the 81st percentile. No source names a fixed version.
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 likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2001-1422- CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2001-1422- Updated
- 2026-11-02
EUVDEUVD-2001-1402 No score
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.
- Record
EUVD-2001-1402- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-hf8p-xhgf-8g9v No score
WinVNC 3.3.3 and earlier generates the same challenge string for multiple connections, which...
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.
- Record
GHSA-hf8p-xhgf-8g9v- Updated
- 2026-11-02
Affected products
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD |