EN

CVE-2024-20253

Critical
9.9
0.05.010.0
Year
2024
Published
Jan 26, 2024
Known Affected Devices
0
CVSS Score
9.9

What is CVE-2024-20253?

A vulnerability in multiple Cisco Unified Communications and Contact Center Solutions products could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device. This vulnerability is due to the improper processing of user-provided data that is being read into memory. An attacker could exploit this vulnerability by sending a crafted message to a listening port of an affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system with the privileges of the web services user. With access to the underlying operating system, the attacker could also establish root access on the affected device.

CVSS Vector Breakdown

CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/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
Changed

Exploiting the vulnerability can affect other components beyond the vulnerable one.

C
Confidentiality Impact
Low

Some sensitive information is disclosed, but attacker has limited access.

I
Integrity Impact
Low

Attacker can modify some data, but scope or consequence is limited.

A
Availability Impact
High

Complete denial of service. The component becomes fully unavailable.

Known Affected Devices

Cisco Cisco ISR 4451 Cisco Cisco ISR 931 Cisco Cisco ISR 951 Cisco Cisco ASR 1001-X Cisco Cisco ASR 1002-X Cisco Cisco ASR 9001 Cisco Cisco ASR 9010 Cisco Cisco ASR 9901 Cisco Cisco ASR 9910 Cisco Cisco Catalyst 2960S-48TS-L Cisco Cisco Catalyst 2960X-24PSQ-L Cisco Cisco Catalyst 3750X-24P-S Cisco Cisco Catalyst 9200-24T Cisco Cisco Catalyst 9200-48P Cisco Cisco Catalyst 9300-24T Cisco Cisco Catalyst 9300-48P Cisco Cisco Catalyst 9300-48T Cisco Cisco Catalyst 9300L-24P-4G Cisco Cisco Catalyst 9500-32C Cisco Cisco ASA 5516-X Cisco Cisco Firepower 2110 Cisco Cisco Catalyst 9115AXI Cisco Cisco Catalyst 9120AXI Cisco Cisco Catalyst 9130AXI Cisco Cisco Catalyst 9800-CL Cisco Cisco Meraki MS390-48U

FAQ

How severe is CVE-2024-20253?

CVE-2024-20253 has a CVSS score of 9.9/10, rated as Critical. This is the highest severity level - immediate patching is strongly recommended.

What does the CVSS score mean for CVE-2024-20253?

CVSS (Common Vulnerability Scoring System) rates vulnerability severity from 0.0 to 10.0. CVE-2024-20253 scores 9.9/10 (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-2024-20253?

The list of devices confirmed to be affected by CVE-2024-20253 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-2024-20253?

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.