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CVE-2021-20021

Quick assessment

Affected
SonicWall Email Security
Exploitation
Confirmed exploitation in the wild; remediate immediately
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Sonicwall SonicWall Email Security Appliance是美国SonicWall（Sonicwall）公司的一款电子邮件安全防护设备。 SonicWall Email Security version 10.0.9.x 存在安全漏洞，该漏洞源于攻击者通过向远程主机发送精心设计的HTTP请求来创建管理帐户。

AI Predicted 9.8 Difficulty: Easy KEV · Ransomware EPSS 88.67% · P100

Public Exploits 1

Nuclei · 1 CVE-2021-20021.yaml [template]

Possible ATT&CK Techniques 1 AI

T1136.003 · Cloud Account

Affected Version Matrix 1

VendorProduct Version RangeStatus
SonicWall Email Security 10.0.9 and earlier affected
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I. Basic Information for CVE-2021-20021

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the SonicWall Email Security version 10.0.9.x allows an attacker to create an administrative account by sending a crafted HTTP request to the remote host.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Sonicwall SonicWall Email Security Appliance 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sonicwall SonicWall Email Security Appliance是美国SonicWall（Sonicwall）公司的一款电子邮件安全防护设备。 SonicWall Email Security version 10.0.9.x 存在安全漏洞，该漏洞源于攻击者通过向远程主机发送精心设计的HTTP请求来创建管理帐户。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
SonicWall Email Security 10.0.9 and earlier -

II. Public POCs for CVE-2021-20021

# POC Description Source Link Shenlong Link
1 None https://github.com/SUPRAAA-1337/CVE-2021-20021 POC Details
2 SonicWall Email Security version 10.0.9.x allows an attacker to create an administrative account by sending a crafted HTTP request to the remote host. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-20021.yaml POC Details
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III. Intelligence Information for CVE-2021-20021

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Other References for CVE-2021-20021 (1)

IV. Related Vulnerabilities

Same product: Email Security
Same vendor: SonicWall
Same weakness: CWE-269

V. Comments for CVE-2021-20021

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