CVE-2024-6142: CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in Actiontec WCB6200Q
Actiontec WCB6200Q uh_tcp_recv_content Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Actiontec WCB6200Q routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the HTTP server. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length buffer. An attacker can leverage this vulnerability to execute code in the context of the HTTP server. Was ZDI-CAN-21410.
CVE-2024-6142: CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in Actiontec WCB6200Q
Description
Actiontec WCB6200Q uh_tcp_recv_content Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Actiontec WCB6200Q routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the HTTP server. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length buffer. An attacker can leverage this vulnerability to execute code in the context of the HTTP server. Was ZDI-CAN-21410.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- zdi
- Date Reserved
- 2024-06-18T21:06:48.294Z
- Cvss Version
- 3.0
- State
- PUBLISHED
Threat ID: 699f6bfab7ef31ef0b55d4b3
Added to database: 2/25/2026, 9:39:06 PM
Last updated: 2/26/2026, 6:11:04 AM
Views: 1
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