CVE-2024-20440
HighExploitedA vulnerability in Cisco Smart Licensing Utility could allow an unauthenticated, remote attacker to access sensitive information.
Published Sep 5, 2024 · Updated Apr 1, 2025
Key Facts
Patch immediately- CVE-2024-20440 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting Smart License Utility (Cisco).
- It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Jun 7, 2025. No public exploit code is known.
- EPSS estimates a 52% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS (30-day exploit likelihood)
52%
Higher than 98.9% of all scored CVEs
Exploited in the wild
Yes
2 catalog listings
Public exploit code
None known
Get the full CVE-2024-20440 brief as a PDF
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Description
A vulnerability in Cisco Smart Licensing Utility could allow an unauthenticated, remote attacker to access sensitive information.
This vulnerability is due to excessive verbosity in a debug log file. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to obtain log files that contain sensitive data, including credentials that can be used to access the API.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Jun 7, 2025 | n/a | Not reported |
| CIRCL KEV | Nov 17, 2025 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
4 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Smart License UtilityCisco | 2.0.0, 2.1.0, 2.2.0, >= 2.1.0 | n/a |
Timeline
Publicly disclosed
Sep 5, 2024
Last updated
Apr 1, 2025
Added to Industry KEV feed
Jun 7, 2025
Added to CIRCL KEV
Nov 17, 2025
Weakness Type
- CWE-532 Insertion of Sensitive Information into Log File
References
- advisorycisco-sa-cslu-7gHMzWmw
- advisoryhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-duo-epic-info-sdLv6h8y
- advisoryhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-expressway-auth-kdFrcZ2j
- advisoryhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-injection-6kn9tSxm
- advisoryUSOM advisory
FAQ
Common Questions.
A vulnerability in Cisco Smart Licensing Utility could allow an unauthenticated, remote attacker to access sensitive information.
Affected: Smart License Utility (Cisco) versions 2.0.0, 2.1.0, 2.2.0, >= 2.1.0. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Jun 7, 2025.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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