CVE-2023-51631

D-Link DIR-X3260 prog.cgi SetUsersSettings Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-X3260 routers. Authentication is required to exploit this vulnerability. The specific flaw exists within the prog.cgi binary, which handles HNAP requests made to the lighttpd webserver listening on TCP ports 80 and 443. The issue results from the lack of proper validation of a user-supplied string before copying it to a fixed-size stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-21675.

• CWE-121
• CWE-787

• https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10365Vendor Advisory
• https://www.zerodayinitiative.com/advisories/ZDI-24-050/Third Party Advisory
• https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10365Vendor Advisory
• https://www.zerodayinitiative.com/advisories/ZDI-24-050/Third Party Advisory

Published

May 2, 2024

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2023-51626D-Link DCS-8300LHV2 RTSP ValidateAuthorizationHeader Usernam…8.8
• CVE-2023-51627D-Link DCS-8300LHV2 ONVIF Duration Stack-Based Buffer Overfl…8
• CVE-2023-51628D-Link DCS-8300LHV2 ONVIF SetHostName Stack-Based Buffer Ove…8
• CVE-2023-51629D-Link DCS-8300LHV2 ONVIF Hardcoded PIN Authentication Bypas…8.8
• CVE-2023-5163The Weather Atlas Widget plugin for WordPress is vulnerable …5.4
• CVE-2023-51630Paessler PRTG Network Monitor Cross-Site Scripting Authentic…6.1
• CVE-2023-51633Centreon sysName Cross-Site Scripting Remote Code Execution …9.6
• CVE-2023-51634NETGEAR RAX30 Improper Certificate Validation Remote Code Ex…7.5
• CVE-2023-51635NETGEAR RAX30 fing_dil Stack-based Buffer Overflow Remote Co…8.8
• CVE-2023-51636Avira Prime Link Following Local Privilege Escalation Vulner…7.8
• CVE-2023-51637Sante PACS Server PG Patient Query SQL Injection Remote Code…9.8
• CVE-2023-51638Allegra Hard-coded Credentials Authentication Bypass Vulnera…9.8