CriticalCVECISA — Known Exploited Vulnerabilities· 17 Dec 2025

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

Severity: Critical · Kind: Vulnerability

What it is

AI offline placeholder summary for: Title: CVE-2025-20393 — Cisco Multiple Products Improper Input Validation Vulner.

Who this affects

AI summarisation is currently disabled — see the source link for the full upstream advisory.

What to do

Re-run summarisation from /admin/threats once ANTHROPIC_API_KEY is configured.

From the source

Cisco Multiple Products. 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. Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Vulnerability facts

CVE
CVE-2025-20393
On CISA KEV since
2025-12-17
Ransomware use
Unknown

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Plain-English summaries are AI-generated and reviewed for tone, not technical accuracy. For incident response, always rely on the original source linked above.