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Page generated: 08 Nov 2026, 08:50 UTC
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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. A…

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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 9.8 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
9.0/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 9.8: +1.47
  • Fresh EPSS: 97.09%: +0.49

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 13 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

Check Point Research
Press · 07 Apr 2025, 07:00 · 7th April – Threat Intelligence Report - Check Point Research
Help Net Security
Press · 03 Apr 2025, 07:00 · Attackers are leveraging Cisco Smart Licensing Utility static admin credentials (CVE-2024-20439) - Help Net Security
CyberSecurityNews
Press · 03 Apr 2025, 07:00 · Cisco Smart Licensing Utility Vulnerabilities Let Attackers Gain Admin Access - CyberSecurityNews
GBHackers News
Press · 03 Apr 2025, 07:00 · Cisco Smart Licensing Utility Flaws Allowed Attackers to Gain Admin Access - GBHackers News
Cybersecurity Dive
Press · 03 Apr 2025, 07:00 · Cisco confirms cyberattacks on Smart Licensing Utility flaw - Cybersecurity Dive
See all 13 source documents
CyberSecurityNews
Press · 01 Apr 2025, 07:00 · CISA Warns of Cisco Smart Licensing Utility Credential Vulnerability Exploited in Attacks - CyberSecurityNews
The Hacker News
Press · 21 Mar 2025, 07:00 · Ongoing Cyber Attacks Exploit Critical Vulnerabilities in Cisco Smart Licensing Utility - The Hacker News
SecurityWeek
Press · 20 Mar 2025, 07:00 · Hackers Target Cisco Smart Licensing Utility Vulnerabilities - SecurityWeek
Cybersecurity Dive
Press · 20 Mar 2025, 07:00 · Cisco Smart Licensing Utility flaws under attack - Cybersecurity Dive
BleepingComputer
Press · 20 Mar 2025, 07:00 · Critical Cisco Smart Licensing Utility flaws now exploited in attacks - BleepingComputer
Cyber Press
Press · 20 Mar 2025, 07:00 · Multiple Cisco Smart Licensing Utility Flaws Under Attack - Cyber Press
The Hacker News
Press · 05 Sep 2024, 07:00 · Cisco Fixes Two Critical Flaws in Smart Licensing Utility to Prevent Remote Attacks - The Hacker News
Arctic Wolf
Press · 04 Sep 2024, 07:00 · Recommendations for CVE-2024-20439 & CVE-2024-20440 - Arctic Wolf

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 9.0 (2026-11-02 15:13). The curve appears once the score changes.

Public exploit evidence

0

Public exploit entries / repo candidates

Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 9.8; EPSS 97.1%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, no prior privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:59:08.088796+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
First press mention
04 Sep 2024, 07:00
Published
04 Sep 2024, 16:28
Added to the CISA KEV catalog
31 Mar 2025, 00:00
Latest press mention
07 Apr 2025, 07:00
Score calculated
05 Nov 2026, 13:59
Source: CVE List V5 · CISA KEV · FIRST EPSS · GitHub · RSSVulnRadar