Critical 9.9Published Sep 14, 2026

CVE-2026-90680D-Link DIR-823G HNAP1 SetStaticRouteSettings strcpy stack-based overflow

Updated under an hour ago (Oct 26, 2026, 3:40 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for D-Link DIR-823G

Exploited in the last 30 days

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.

CVSS: 9.9 CRITICAL (v3.1, CNA)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
Weakness (CWE): CWE-121, CWE-119
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Sep 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

D-Link DIR-823G d-link:dir-823g	1.0.2B05_20181207	CNA record

References

References

https://vuldb.com/vuln/403213	vdb-entry, technical-description
https://vuldb.com/vuln/403213/cti	signature, permissions-required
https://vuldb.com/cve/CVE-2026-90680	third-party-advisory
https://vuldb.com/submit/914902	third-party-advisory
https://github.com/Amalll-Sec/router-vulnerability-research/blob/main/advisories/d-link/dir-823g/SetStaticRouteSettings/README.md	related
https://www.dlink.com/	product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.