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CVE-2025-20393— Cisco Secure Email Gateway and Cisco Secure Email and Web Manager Remote Command Execution Vulnerability

Quick assessment

Affected
Cisco Cisco Secure Email
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.

Cisco Secure Email和Cisco Secure Email and Web Manager都是美国思科（Cisco）公司的产品。Cisco Secure Email是思科安全电子邮件（前身为电子邮件安全）为您的电子邮件提供最佳保护，使其免受网络威胁。Cisco Secure Email and Web Manager是一个安全电子邮件和 Web 管理器。 Cisco Secure Email和Cisco Secure Email and Web Manager存在安全漏洞。攻击者利用该漏洞

CVSS 10.0 · Critical KEV EPSS 32.39% · P98

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 44

VendorProduct Version RangeStatus
Cisco Cisco Secure Email 14.0.0-698 affected
13.5.1-277 affected
13.0.0-392 affected
14.2.0-620 affected
13.0.5-007 affected
13.5.4-038 affected
14.2.1-020 affected
14.3.0-032 affected
… +10 more rows
Cisco Cisco Secure Email and Web Manager 13.6.2-023 affected
13.6.2-078 affected
13.0.0-249 affected
13.0.0-277 affected
13.8.1-052 affected
13.8.1-068 affected
13.8.1-074 affected
14.0.0-404 affected
… +18 more rows
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I. Basic Information for CVE-2025-20393

Vulnerability Information
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Vulnerability Title
Cisco Secure Email Gateway and Cisco Secure Email and Web Manager Remote Command Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Spam Quarantine feature of Cisco AsyncOS Software for Cisco Secure Email Gateway and Cisco Secure Email and Web Manager could allow an unauthenticated, remote attacker to execute arbitrary system commands on an affected device with root privileges. This vulnerability is due to insufficient validation of HTTP requests by the Spam Quarantine feature. An attacker could exploit this vulnerability by sending a crafted HTTP request to the affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system with root privileges.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Secure Email和Cisco Secure Email and Web Manager 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Secure Email和Cisco Secure Email and Web Manager都是美国思科（Cisco）公司的产品。Cisco Secure Email是思科安全电子邮件（前身为电子邮件安全）为您的电子邮件提供最佳保护，使其免受网络威胁。Cisco Secure Email and Web Manager是一个安全电子邮件和 Web 管理器。 Cisco Secure Email和Cisco Secure Email and Web Manager存在安全漏洞。攻击者利用该漏洞
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
Cisco Cisco Secure Email 14.0.0-698 -
Cisco Cisco Secure Email and Web Manager 13.6.2-023 -

II. Public POCs for CVE-2025-20393

# POC Description Source Link Shenlong Link
1 This scanner detects Cisco SEG/SEWM appliances vulnerable to CVE-2025-20393, a critical unauthenticated RCE vulnerability in Cisco AsyncOS affecting devices with Spam Quarantine feature exposed to the internet. CVSS Score: 10.0 (Critical) https://github.com/thesystemowner/CVE-2025-20393-POC POC Details
2 Cisco is aware of a potential vulnerability.  Cisco is currently investigating and will update these details as appropriate as more information becomes available. https://github.com/cyberleelawat/CVE-2025-20393 POC Details
3 None https://github.com/KingHacker353/CVE-2025-20393 POC Details
4 None https://github.com/b1gchoi/CVE-2025-20393 POC Details
5 Script to detect CVE-2025-20393 for Cisco Secure Email Gateway And Cisco Secure Email and Web Manager https://github.com/StasonJatham/cisco-sa-sma-attack-N9bf4 POC Details
6 CVE-2025-20393 https://github.com/Ashwesker/Blackash-CVE-2025-20393 POC Details
7 CVE-2025-20393 https://github.com/Ashwesker/Ashwesker-CVE-2025-20393 POC Details
8 🔍 Probe hosts for open Cisco Secure Email/Malware Analytics ports and CVE-2025-20393 exposure using a simple Python script. https://github.com/MRH701/mrh701.github.io POC Details
9 This tool helps identify exposure to CVE-2025-20393 by checking for open TCP/6025 ports, responsive Spam Quarantine interfaces, and known post-exploitation IOCs. https://github.com/cyberdudebivash/CYBERDUDEBIVASH-Cisco-AsyncOS-CVE-2025-20393-Scanner POC Details
10 CVE-2025-20393 https://github.com/redpack-kr/Blackash-CVE-2025-20393 POC Details
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III. Intelligence Information for CVE-2025-20393

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Vendor Advisories for CVE-2025-20393 (1)

IV. Related Vulnerabilities

Same product: Cisco Secure Email
Same vendor: Cisco
Same weakness: CWE-20

V. Comments for CVE-2025-20393

Anonymous User
2026-01-15 06:08:56

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