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I. Basic Information for CVE-2021-33500
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
PuTTY before 0.75 on Windows allows remote servers to cause a denial of service (Windows GUI hang) by telling the PuTTY window to change its title repeatedly at high speed, which results in many SetWindowTextA or SetWindowTextW calls. NOTE: the same attack methodology may affect some OS-level GUIs on Linux or other platforms for similar reasons.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
PuTTY 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PuTTY是Simon Tatham个人开发者的一套免费的Telnet、Rlogin和SSH客户端软件。该软件主要用于对Linux系统进行远程管理。 PuTTY 0.75之前的版本存在安全漏洞,该漏洞源于允许远程服务器通过告诉PuTTY窗口反复高速更改其标题来导致拒绝服务(Windows GUI挂起)导致多次setwindowtextta或SetWindowTextW调用。
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
-n/a n/a -
II. Public POCs for CVE-2021-33500
#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 6499 chars
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III. Intelligence Information for CVE-2021-33500
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IV. Related Vulnerabilities
V. Comments for CVE-2021-33500

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