CVE-2025-20393
CWE-20
104.2
RPSRPS range: 0–105; KEV-listed vulnerabilities can receive an exploitation amplifier.
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: NVD
Signals
- CVSS
- 10.0
- Critical · v3.1
- EPSS
- 32.39%
- Probability of exploitation in the next 30 days (FIRST)
- CISA KEV
- In CISA KEV since Dec 2025
- Fix commit
- No known fix commit
- Sources: MoreFixes, FreshFixes
- Weakness
- CWE-20
- Published
- 17 Dec 2025
- Last modified 16 Jan 2026
How to read these signals: RPS · EPSS · CISA KEV · Data sources
Get this score from the API
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Data as of 7 Oct 2026, 05:16 UK time