CriticalDecember 17, 2025
Source: CISA KEV

CVE-2025-20393: Cisco Multiple Products Improper Input Validation Vulnerability

Cisco Secure Email Gateway, Secure Email, AsyncOS Software, and Web Manager appliances contains an improper input validation vulnerability that allows threat actors to execute arbitrary commands with root privileges on the underlying operating system of an affected appliance. This is a critical threat mapped to CVE-...

Related CVEs

CVE-2025-20393

Recommended Defense & Controls

Verified Partners

SecOpsPulse may earn an affiliate commission when you procure security software via these partner links. Tool selections are automated based on attack vectors and are independent of editorial coverage.

SecOps Recommended Triage Checklist

  • 01.Scope & Asset Discovery: Query vulnerability scanners (e.g. Tenable) and software bill of materials (SBOM) to pinpoint affected packages and services.
  • 02.Vendor Patch Application: Prioritize deployment of official security patches released by upstream vendors.
  • 03.Compensating Defense Controls: If patch cannot be applied immediately, enforce strict firewall/WAF boundaries and isolate target instances.
  • 04.Endpoint Behavioral Monitoring: Audit telemetry via EDR (e.g. CrowdStrike) for abnormal child processes or privilege escalation attempts.

Weekly Executive Briefing

Top critical & high-severity threats, every week.

No spam. Unsubscribe anytime. SecOpsPulse may include sponsored security tool recommendations.

Share Intel:Share on XLinkedIn