CVE-2025-60679

A stack buffer overflow vulnerability exists in the D-Link DIR-816A2 router firmware DIR-816A2_FWv1.10CNB05_R1B011D88210.img in the upload.cgi module, which handles firmware version information. The vulnerability occurs because /proc/version is read into a 512-byte buffer and then concatenated using sprintf() into another 512-byte buffer containing a 29-byte constant. Input exceeding 481 bytes triggers a stack buffer overflow, allowing an attacker who can control /proc/version content to potentially execute arbitrary code on the device.

• CWE-121

• https://github.com/yifan20020708/SGTaint-0-day/blob/main/DLink/DLink-DIR-816/CVE-2025-60679.mdExploit, Third Party Advisory
• https://www.dlink.com/enProduct
• https://www.dlink.com/en/security-bulletin/Vendor Advisory

Published

Nov 13, 2025

Last Modified

Jul 5, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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