What’s Vulnerable › Vulnerabilities

CVE-2023-50209: D-Link G416 cfgsave Stack-Based Buffer Overflow Remote Code Execution Vulnerability

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-03 · updated 2026-06-17
• Weakness: CWE-121

Description

D-Link G416 cfgsave Stack-Based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link G416 wireless routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the HTTP service listening on TCP port 80. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-21442.

Affected products

• D-Link G416: before 1.09b01 — fixed in 1.09b01

How to fix

Upgrade to a fixed version: D-Link G416 1.09b01. Check the vendor advisory for mitigations.

References

• https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10367
• https://www.zerodayinitiative.com/advisories/ZDI-23-1825/
• https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10367
• https://www.zerodayinitiative.com/advisories/ZDI-23-1825/

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