CVE-2026-90680

CRITICAL 9.9

D-Link DIR-823G HNAP1 SetStaticRouteSettings strcpy stack-based overflow

CVSS Score

9.9

EPSS Score

0.0%

EPSS Percentile

0th

A security flaw has been discovered in D-Link DIR-823G 1.0.2B05_20181207. The impacted element is the function strcpy of the file /HNAP1/SetStaticRouteSettings of the component HNAP1. The manipulation of the argument PAddress/SubnetMask/Gateway results in stack-based buffer overflow. The attack can be launched remotely.

CWE	CWE-121 CWE-119
Vendor	d-link
Product	dir-823g
Published	Sep 14, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:X/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

D-Link / DIR-823G

1.0.2B05_20181207

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/403213 vuldb.com: https://vuldb.com/vuln/403213/cti vuldb.com: https://vuldb.com/cve/CVE-2026-90680 vuldb.com: https://vuldb.com/submit/914902 github.com: https://github.com/Amalll-Sec/router-vulnerability-research/blob/main/advisories/d-link/dir-823g/SetStaticRouteSettings/README.md dlink.com: https://www.dlink.com/

Credits

🔍 AmaIIl (VulDB User)