KEV Entry

CVE-2025-20393

Known Exploited Vulnerability Entry CISA

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Entry Details
Confirmed Exploited

CVE-2025-20393

2025-12-17 01:00 CET

Timestamps

2025-12-17

2025-12-17

Scope

Cisco Multiple Products Improper Input Validation Vulnerability | Affected: Cisco / Multiple Products | 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. | 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. | Due date: 2025-12-24 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): Please adhere to Cisco's guidelines to assess exposure and mitigate risks. Check for signs of potential compromise on all internet accessible Cisco products affected by this vulnerability. Apply any final mitigations provided by the vendor as soon as they become available. For more information please see: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sma-attack-N9bf4 ; https://nvd.nist.gov/vuln/detail/CVE-2025-20393

References
  • {'id': 'CVE-2025-20393', 'url': 'https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-20393'}

59fecd88-ff85-43b0-9151-4d7d81db6ca4

CISA
405284c2-e461-4670-8979-7fd2c9755a60

2026-10-02 08:09 CEST

2026-10-02 08:09 CEST

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
vendor_report cisa-kev successful_exploitation 0.80
View details 
{
  "cwes": [
    "CWE-20"
  ],
  "date_added": "2025-12-17",
  "due_date": "2025-12-24",
  "feed": "CISA Known Exploited Vulnerabilities Catalog",
  "knownRansomwareCampaignUse": "Unknown",
  "product": "Multiple Products",
  "vendorProject": "Cisco",
  "vulnerabilityName": "Cisco Multiple Products Improper Input Validation Vulnerability"
}
 -
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