EN

CVE-2024-20439

Critical
9.8
0.05.010.0
Year
2024
Published
Sep 4, 2024
Known Affected Devices
0
CVSS Score
9.8

What is 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.

CVSS Vector Breakdown

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

Exploitable remotely over the network without requiring access to the local system.

AC
Attack Complexity
Low

No special conditions required. Exploit can be performed reliably and repeatedly.

PR
Privileges Required
None

No authentication required. Any anonymous user can exploit this vulnerability.

UI
User Interaction
None

No user interaction required. Exploit runs without any victim action.

S
Scope
Unchanged

Exploiting the vulnerability only affects the vulnerable component itself.

C
Confidentiality Impact
High

Complete loss of confidentiality. All data on the component may be exposed.

I
Integrity Impact
High

Complete loss of integrity. Attacker can modify any file or data on the component.

A
Availability Impact
High

Complete denial of service. The component becomes fully unavailable.

Known Affected Devices

Cisco Cisco ISR 927 Cisco Cisco ASR 1001-HX Cisco Cisco ASR 1002-X Cisco Cisco ASR 1006-X Cisco Cisco Catalyst 2960-24TC-L Cisco Cisco Catalyst 2960S-48TS-L Cisco Cisco Catalyst 2960X-24TS-L Cisco Cisco Catalyst 2960X-48TS-L Cisco Cisco Catalyst 2960X-48FPS-L Cisco Cisco Catalyst 2960XR-24TS-I Cisco Cisco Catalyst 2960XR-48TS-I Cisco Cisco Catalyst 2960L-24TS-LL Cisco Cisco Catalyst 3560CX-8PC-S Cisco Cisco Catalyst 3650-48TS-L Cisco Cisco Catalyst 3650-48FPS-L Cisco Cisco Catalyst 3750X-24T-S Cisco Cisco Catalyst 3750X-24P-S Cisco Cisco Catalyst 9200-48P Cisco Cisco Catalyst 9200-48T Cisco Cisco Catalyst 9200L-24P-4G Cisco Cisco Catalyst 9200L-24P-4X Cisco Cisco Catalyst 9300-24T Cisco Cisco Catalyst 9300-24U Cisco Cisco Catalyst 9300-24UX Cisco Cisco Catalyst 9300-48P Cisco Cisco Catalyst 9300-48U Cisco Cisco Catalyst 9300-48UXM Cisco Cisco Catalyst 9300L-24T-4G Cisco Cisco Catalyst 9300L-48T-4G Cisco Cisco Catalyst 9407R Cisco Cisco Catalyst 9500-16X Cisco Cisco Catalyst 9500-24Q Cisco Cisco Catalyst 9500-40X Cisco Cisco Catalyst 9115AXI Cisco Cisco Catalyst 9800-40 Cisco Cisco Catalyst 9800-L-F

FAQ

How severe is CVE-2024-20439?

CVE-2024-20439 has a CVSS score of 9.8/10, rated as Critical. This is the highest severity level - immediate patching is strongly recommended.

What does the CVSS score mean for CVE-2024-20439?

CVSS (Common Vulnerability Scoring System) rates vulnerability severity from 0.0 to 10.0. CVE-2024-20439 scores 9.8/10 (Critical). Scores 9.0–10.0 are Critical, 7.0–8.9 are High, 4.0–6.9 are Medium, and below 4.0 are Low.

Which devices are affected by CVE-2024-20439?

The list of devices confirmed to be affected by CVE-2024-20439 is shown in the "Affected Devices" section above. Check your firmware version against the vendor security advisory and apply the latest patch.

How do I fix or mitigate CVE-2024-20439?

Apply the latest firmware or software update from the vendor. Check the References section above for official advisories and patch notes. If no patch is available, consider disabling the affected feature or isolating the device from untrusted networks.