Vulnerability in Cisco Smart License Utility

CVE-2024-20439

A vulnerability in Cisco Smart Licensing Utility (CSLU) could allow an unauthenticated, remote attacker to log into an affected system by using a static administrative credential. This vulnerability is due to an undocumented static user credential for an administrative account. An attacker could exploit this vulnerability by using the static credentials to login to the affected system. A successful exploit could allow the attacker to login to the affected system with administrative rights over the CSLU application API.

EPSS: 0.921 (99.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: .

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.

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2024-20439?
CVE-2024-20439 is a critical-severity vulnerability in Cisco Smart License Utility, classified under Hidden Functionality. CVSS score: 9.8/10. Published 2024-09-04.
How severe is CVE-2024-20439?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2024-20439 known to be exploited?
Yes. CVE-2024-20439 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-03-31), indicating it is being actively exploited. 10 public proof-of-concept repositories are indexed.