Stack-based buffer overflow in D-Link DIR-815

1) Stack-based buffer overflow

EUVDB-ID: #VU111995

Risk: High

CVSSv4.0: 7.4 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2025-6328

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the "sub_403794" function in "hedwig.cgi" file. A remote user can trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Dir-815: 1.01

CPE2.3

• cpe:2.3:h:d-link:dir-815:1.01:*:*:*:*:*:*:*

External links

https://github.com/Thir0th/Thir0th-CVE/blob/main/D-Link%20DIR-815%20RevA%20v1.01.md
https://vuldb.com/?ctiid.313324
https://vuldb.com/?id.313324
https://vuldb.com/?submit.596439
https://www.dlink.com/
https://supportannouncement.us.dlink.com/security/publication.aspx?name=SAP10434

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.