What is the CVSS score of CVE-2022-24021?

CVE-2022-24021 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.1%.

Is there a public PoC exploit available for CVE-2022-24021?

Yes, a public proof-of-concept exploit is available for CVE-2022-24021. Prioritise patching immediately. EPSS: 1.1%.

Linkhub Mesh Wifi Ac1200 CVE-2022-24021

CRITICAL

Classic Buffer Overflow (CWE-120)

2022-08-05 talos-cna@cisco.com

Buffer Overflow Linkhub Mesh Wifi Ac1200

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Aug 05, 2022 - 22:15 nvd

CRITICAL 9.8

DescriptionNVD

A buffer overflow vulnerability exists in the GetValue functionality of TCL LinkHub Mesh Wi-Fi MS1G_00_01.00_14. A specially-crafted configuration value can lead to a buffer overflow. An attacker can modify a configuration value to trigger this vulnerability.This vulnerability represents all occurances of the buffer overflow vulnerability within the online_process binary.

AnalysisAI

A buffer overflow vulnerability exists in the GetValue functionality of TCL LinkHub Mesh Wi-Fi MS1G_00_01.00_14. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. A buffer overflow vulnerability exists in the GetValue functionality of TCL LinkHub Mesh Wi-Fi MS1G_00_01.00_14. A specially-crafted configuration value can lead to a buffer overflow. An attacker can modify a configuration value to trigger this vulnerability.This vulnerability represents all occurances of the buffer overflow vulnerability within the online_process binary. Affected products include: Tcl Linkhub Mesh Wifi Ac1200.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.