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CVE-2024-20439

Cisco Smart Licensing Utility Static Credential

9.8 CRITICALActively exploited (CISA KEV)EPSS 97.1%
  1. Published4 Sept 2024
  2. Added to CISA KEV31 Mar 2025
  3. Remediation due21 Apr 2025
Actively exploited (CISA KEV)

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.

Added to KEV: 31 Mar 2025Federal remediation due: 21 Apr 2025

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Cisco Smart License Utility≥ 2.0.0 < 2.3.0

Remediation

Fixed in
Cisco Smart License Utility≥ 2.3.0

References

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Frequently asked

Is CVE-2024-20439 being actively exploited?

Yes. CVE-2024-20439 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 31 Mar 2025.

How severe is CVE-2024-20439?

CVE-2024-20439 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 97.1% probability of exploitation.

Which products are affected by CVE-2024-20439?

Affected products include Cisco Smart License Utility.

How do I fix CVE-2024-20439?

Upgrade affected software to a fixed version, for example Cisco Smart License Utility 2.3.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-20439 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.