CVE-2025-9938: D-Link DI-8400 yyxz.asp yyxz_dlink_asp stack-based overflow

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-09-04 · updated 2026-06-17
Weakness: CWE-119

Description

A weakness has been identified in D-Link DI-8400 16.07.26A1. The affected element is the function yyxz_dlink_asp of the file /yyxz.asp. This manipulation of the argument ID causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be exploited.

Affected products

D-Link DI-8400: 16.07.26a1

References

https://github.com/ZZ2266/.github.io/tree/main/Dlink/DI-8400/yyxz.asp
https://github.com/ZZ2266/.github.io/tree/main/Dlink/DI-8400/yyxz.asp#proof-of-concept-poc
https://vuldb.com/?ctiid.322340
https://vuldb.com/?id.322340
https://vuldb.com/?submit.643446
https://www.dlink.com/

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