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I. Basic Information for CVE-2021-42785
Vulnerability Information
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Vulnerability Title
Buffer Overflow in tvnviewer.exe via Crafted Packet in TightVNC Viewer 2.8.59
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: NVD (National Vulnerability Database)
Vulnerability Title
TightVNC 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TightVNC是一套跨平台的开源远程桌面软件。 TightVNC Viewer的tvnviewer.exe存在安全漏洞，攻击者可利用该漏洞借助特制的FramebufferUpdate数据包从VNC服务器执行任意指令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
GlavSoft LLCTightVNC Viewer 2.8.59 ~ 2.8.59 -
II. Public POCs for CVE-2021-42785
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III. Intelligence Information for CVE-2021-42785
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IV. Related Vulnerabilities
Same weakness: CWE-120
V. Comments for CVE-2021-42785

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