High severity · published Sep 3, 2025
CVE-2025-9938
D-Link DI-8400 yyxz.asp yyxz_dlink_asp stack-based overflow
8.8
CVSS
1.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 76% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DI
DI-8400 · D-Link
16.07.26A1 · source: vendor
DF
Di-8400 Firmware · Dlink
16.07.26a1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-9938
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-9938
Exploit
https://github.com/ZZ2266/.github.io/tree/main/Dlink/DI-8400/yyxz.asp
Exploit
https://github.com/ZZ2266/.github.io/tree/main/Dlink/DI-8400/yyxz.asp#proof-of-concept-poc
Permissions Required
https://vuldb.com/?ctiid.322340
Third Party Advisory
https://vuldb.com/?id.322340
Third Party Advisory
https://vuldb.com/?submit.643446
Product
https://www.dlink.com/
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