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Vulnerability record · CVE-2026-90680 · published 14 September 2026

CVE-2026-90680: Memory buffer overflow vulnerability

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.

9.4 CVSS 4.0 Critical EPSS 0.91% · top 41.6% CWE-119 · Memory buffer overflowCWE-121 · Stack-based buffer overflow Deferred
9.4CVSS 4.0 base score, v2 9.0
0.91%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
6References
16 Sep 2026Last modified by NVD

Description

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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

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

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Source: NIST National Vulnerability Database (record CVE-2026-90680), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.