CVE-2025-9938

7.4 highEPSS 1.6%

High (7.4) in dlink di-8400 firmware. EPSS 1.6% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

7.4 high

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

CVSS 3.1

8.8 high

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

EPSS: 1.6% chance of exploitation in the next 30 days; higher than 75% of CVEs (scores of 2026-10-31)
CWEs: CWE-787, CWE-119, CWE-121
Published: 2025-09-04
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

dlink:di-8400_firmware

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

Check your stack JSON