CVE-2025-20393 · netVigilance record NV25-0240
Cisco Multiple Products Improper Input Validation
past due
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA deadline 2025-12-24 · passed 8 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA
What happened
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.
Who is affected
Cisco Multiple Products. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.
Weakness class: CWE-20.
Timeline
- Added to CISA KEVExploitation in the wild confirmed by CISA
- CISA remediation deadlinepassed 8 months ago
Sources
- NVD entry for CVE-2025-20393 nvd.nist.gov/vuln/detail/CVE-2025-20393
- CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
- sec.cloudapps.cisco.com sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sma-attack-N9bf4
- nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2025-20393