#VU112016 Stack-based buffer overflow in DIR-619L and DIR-619L-ES - CVE-2025-6370

Vulnerability identifier: #VU112016

Vulnerability risk: Medium

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:Green]

CVE-ID: CVE-2025-6370

CWE-ID: CWE-121

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
DIR-619L
Hardware solutions / Routers & switches, VoIP, GSM, etc
DIR-619L-ES
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: D-Link

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 "formWlanGuestSetup" function in "/goform/formWlanGuestSetup" 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-619L: 2.06B01

DIR-619L-ES: All versions

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External links
https://github.com/wudipjq/my_vuln/blob/main/D-Link6/vuln_70/70.md
https://github.com/wudipjq/my_vuln/blob/main/D-Link6/vuln_70/70.md
https://vuldb.com/?ctiid.313363
https://vuldb.com/?id.313363
https://vuldb.com/?submit.597423
https://www.dlink.com/
https://supportannouncement.us.dlink.com/security/publication.aspx?name=SAP10385

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Q & A

Can this vulnerability be exploited remotely?

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

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.