Is CVE-2024-20439 in the CISA KEV catalog?

Yes. CVE-2024-20439 is on the CISA Known Exploited Vulnerabilities list, added 2025-03-31.

What is the CVSS severity of CVE-2024-20439?

CVE-2024-20439 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2024-20439?

CVE-2024-20439 has an EPSS score of 92.06% (100th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-20439?

Upgrade smart license utility to 2.3.0 or later.

CVE & CISA-KEV Catalog

CVE-2024-20439

CRITICALCISA KEVEPSS 100th pctl

9.8

CVSS v3

NVD

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.

CWE-912 CWE-798Hard-coded Credentials

How to fix

Remediation Available

smart license utilityNVD

Affected:>= 2.0.0, < 2.3.0Fixed in:2.3.0CVE-2024-20439derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

92.06%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Cisco Smart Licensing Utility Static Credential Vulnerability

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.

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Remediation due: 2025-04-21

References

Vendor Advisory1

sec.cloudapps.cisco.com

Government Resource1

cisa.gov

Related Vulnerabilities

Other CWE-912 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-34117	Unscored	-	23%	-	-
CVE-2021-24867	Critical	9.8	19%	-	Fix
CVE-2024-6045	High	8.8	6.3%	-	-
CVE-2020-16204	Critical	9.8	5.5%	-	-
CVE-2010-20103	Critical	9.8	4.8%	-	-
CVE-2020-12504	Critical	9.8	3.0%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-28.