CVE-2025-60674: dir-878 Stack Overflow

Description

A stack buffer overflow vulnerability exists in the D-Link DIR-878A1 router firmware FW101B04.bin in the rc binary's USB storage handling module. The vulnerability occurs when the "Serial Number" field from a USB device is read via sscanf into a 64-byte stack buffer, while fgets reads up to 127 bytes, causing a stack overflow. An attacker with physical access or control over a USB device can exploit this vulnerability to potentially execute arbitrary code on the device.

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CVSS v3.1 Score

6.8

MEDIUM

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

Weakness Type (CWE)

CWE-121 CWE-121

Affected Products

Vendor	Product	Versions
dlink	dir-878_firmware	All
dlink	dir-878	All

References

Advisories & Patches

https://www.dlink.com/en/security-bulletin/

Exploits

https://github.com/yifan20020708/SGTaint-0-day/blob/main/DLink/DLink-DIR-878/CVE-2025-60674.md

Other References

http://d-link.com https://www.dlink.com/en

Frequently Asked Questions

What is CVE-2025-60674? +

A stack buffer overflow vulnerability exists in the D-Link DIR-878A1 router firmware FW101B04.bin in the rc binary's USB storage handling module. The vulnerability occurs when the "Serial Number" field from a USB device is read via sscanf into a 64-byte stack buffer, while fgets reads up to 127 bytes, causing a stack overflow. An attacker with physical access or control over a USB device can exploit this vulnerability to potentially execute arbitrary code on the device. It has a CVSS v3.1 base score of 6.8 (MEDIUM).

How severe is CVE-2025-60674? +

CVE-2025-60674 has a CVSS v3.1 score of 6.8 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-60674? +

CVE-2025-60674 affects products from dlink, specifically: dir-878, dir-878_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-60674? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2025-60674