CVE Vulnerability

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 server.

7.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

9.8 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://www.tightvnc.com/whatsnew.php Release Notes Vendor Advisory
Configurations

Configuration 1

cpe:2.3:a:tightvnc:tightvnc:*:*:*:*:*:*:*:*
Information

Published : 2021-11-23 10:15

Updated : 2021-11-29 02:23

NVD link : CVE-2021-42785

Mitre link : CVE-2021-42785

Products Affected
No products.
CWE
CWE-120