Unscored severity · published Dec 11, 2002
CVE-2002-1336
TightVNC before 1.2.6 generates the same challenge string for multiple connections, which allows remote attackers to bypass VNC authentication by sniffing the challenge and…
–
CVSS
2.4%
EPSS
No
On KEV
Description
TightVNC before 1.2.6 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.
Exploitation
Is it being used?
Exploit prediction (EPSS)2.4% · higher than 84% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TI
Tightvnc · Tightvnc
1.2.0; 1.2.1; 1.2.3; 1.2.4; 1.2.5 · source: NVD
Affected product
TI
Tightvnc
Tightvnc
More from Tightvnc
9.8
CVE-2021-42785
Buffer Overflow vulnerability in tvnviewer.exe of TightVNC Viewer allows a remote attacker to execute arbitrary instructions via a crafted FramebufferUpdate packet from a VNC…
9.8
CVE-2019-8287
TightVNC code version 1.3.10 contains global buffer overflow in HandleCoRREBBP macro function, which can potentially result code execution
9.8
CVE-2019-15679
TightVNC code version 1.3.10 contains heap buffer overflow in InitialiseRFBConnection function, which can potentially result code execution
9.8
CVE-2019-15678
TightVNC code version 1.3.10 contains heap buffer overflow in rfbServerCutText handler, which can potentially result code execution
9.0
CVE-2023-27830
TightVNC before v2.8.75 allows attackers to escalate privileges on the host operating system via replacing legitimate files with crafted files when executing a file transfer