Known exploited · Cisco
CVE-2024-20439: Cisco Smart Licensing Utility Static Credential Vulnerability
What it is
Cisco Smart Licensing Utility contains a static credential vulnerability that allows an unauthenticated, remote attacker to log in to an affected system and gain administrative credentials.
- Vendor
- Cisco
- Product
- Smart Licensing Utility
- Added to KEV
- March 31, 2025
- CISA due date
- April 21, 2025
- Ransomware use
- Unknown
- Weakness
- CWE-912: Hidden Functionality
What CISA requires
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Forensic triage
No
What to do now
- Find every instance of Smart Licensing Utility you run, including the forgotten ones, and check its version against the vendor advisory.
- Apply the vendor's fix or mitigation, before April 21, 2025 if you are bound by CISA's deadline, sooner if it faces the internet.
- Assume it was tried against you already: look for signs of exploitation from the date it was added, not from the day you patched.
References
H2 Security
Not sure you are clear?
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Start freeSource: CISA Known Exploited Vulnerabilities Catalog (public domain), catalog version 2026.10.01.