Vulnerability · Published Sep 3, 2025 · Assigned by VulDB
CVE-2025-9938D-Link DI-8400 yyxz.asp yyxz_dlink_asp stack-based overflow
High 8.8
In plain English
A high-severity stack buffer overflow in DI-8400 from D-Link. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 77% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)1.7%top 22.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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 (as reported)
Weakness: CWE-121, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
References
- VDB-322340 | D-Link DI-8400 yyxz.asp yyxz_dlink_asp stack-based overflow vdb-entry, technical-description
- VDB-322340 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #643446 | D-Link DI-8400 16.07.26A1 Stack-based Buffer Overflow third-party-advisory
- https://github.com/ZZ2266/.github.io/tree/main/Dlink/DI-8400/yyxz.asp related
- https://github.com/ZZ2266/.github.io/tree/main/Dlink/DI-8400/yyxz.asp#proof-of-concept-poc exploit
- https://www.dlink.com/ product