All vulnerabilities
CVE-2025-20393

Cisco Multiple Products Improper Input Validation Vulnerability

Cisco Multiple ProductsNetwork & edge
Open in ThreatlineRecord JSON
CVSS
10.0Critical
ExploitationExploited in the wildAdded to KEV 17 Dec 2025CISA KEV
Exploit odds (EPSS)32.4%Chance of exploitation activity in the next 30 days, higher than 98% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline24 Dec 2025Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 17 Dec 2025Added to CISA KEVCISA KEV
  2. 17 Dec 2025, 16:47 UTCPublishedCVE List

Description

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.

Text from CVE List

Affected versions 44

  • Cisco Secure Emailaffected: 14.0.0-698CVE List
  • Cisco Secure Emailaffected: 13.5.1-277CVE List
  • Cisco Secure Emailaffected: 13.0.0-392CVE List
  • Cisco Secure Emailaffected: 14.2.0-620CVE List
  • Cisco Secure Emailaffected: 13.0.5-007CVE List
  • Cisco Secure Emailaffected: 13.5.4-038CVE List
  • Cisco Secure Emailaffected: 14.2.1-020CVE List
  • Cisco Secure Emailaffected: 14.3.0-032CVE List
  • Cisco Secure Emailaffected: 15.0.0-104CVE List
  • Cisco Secure Emailaffected: 15.0.1-030CVE List
  • Cisco Secure Emailaffected: 15.5.0-048CVE List
  • Cisco Secure Emailaffected: 15.5.1-055CVE List
  • Cisco Secure Emailaffected: 15.5.2-018CVE List
  • Cisco Secure Emailaffected: 16.0.0-050CVE List
  • Cisco Secure Emailaffected: 15.0.3-002CVE List
  • Cisco Secure Emailaffected: 16.0.0-054CVE List
  • Cisco Secure Emailaffected: 15.5.3-022CVE List
  • Cisco Secure Emailaffected: 16.0.1-017CVE List
  • Cisco Secure Email and Web Manageraffected: 13.6.2-023CVE List
  • Cisco Secure Email and Web Manageraffected: 13.6.2-078CVE List
  • Cisco Secure Email and Web Manageraffected: 13.0.0-249CVE List
  • Cisco Secure Email and Web Manageraffected: 13.0.0-277CVE List
  • Cisco Secure Email and Web Manageraffected: 13.8.1-052CVE List
  • Cisco Secure Email and Web Manageraffected: 13.8.1-068CVE List
  • Cisco Secure Email and Web Manageraffected: 13.8.1-074CVE List
  • Cisco Secure Email and Web Manageraffected: 14.0.0-404CVE List
  • Cisco Secure Email and Web Manageraffected: 12.8.1-002CVE List
  • Cisco Secure Email and Web Manageraffected: 14.1.0-227CVE List
  • Cisco Secure Email and Web Manageraffected: 13.6.1-201CVE List
  • Cisco Secure Email and Web Manageraffected: 14.2.0-203CVE List
  • Cisco Secure Email and Web Manageraffected: 14.2.0-212CVE List
  • Cisco Secure Email and Web Manageraffected: 12.8.1-021CVE List
  • Cisco Secure Email and Web Manageraffected: 13.8.1-108CVE List
  • Cisco Secure Email and Web Manageraffected: 14.2.0-224CVE List
  • Cisco Secure Email and Web Manageraffected: 14.3.0-120CVE List
  • Cisco Secure Email and Web Manageraffected: 15.0.0-334CVE List
  • Cisco Secure Email and Web Manageraffected: 15.5.1-024CVE List
  • Cisco Secure Email and Web Manageraffected: 15.5.1-029CVE List
  • Cisco Secure Email and Web Manageraffected: 15.5.2-005CVE List
  • Cisco Secure Email and Web Manageraffected: 16.0.0-195CVE List
  • Cisco Secure Email and Web Manageraffected: 15.5.3-017CVE List
  • Cisco Secure Email and Web Manageraffected: 16.0.1-010CVE List
  • Cisco Secure Email and Web Manageraffected: 15.0.1-035CVE List
  • Cisco Secure Email and Web Manageraffected: 16.0.2-088CVE List

References 3