by Kastro
Paper/Archive/CVE-2026-90680

CVE-2026-90680

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

EPSS 0.9%CVSS 9.9
critical.is priorityof 100
42
CVSS 9.9 (CNA)9.9 / 10 × 3029.7Not in CISA KEV+300.0EPSS percentile 60.0.600 × 2012.0No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
DIR-823G1.0.2B05_20181207–CNA

Scores by source

VulDB (CNA)9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:X/RL:X/RC:R
VulDB (CNA)9.9CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:X/RL:X/RC:R
VulDB (CNA)9.4CVSS: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
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

writeupvuldb.com/vuln/403213refvuldb.com/vuln/403213/ctiwriteupvuldb.com/cve/CVE-2026-90680writeupvuldb.com/submit/914902refgithub.com/Amalll-Sec/router-vulnerability-research/blob/main/advisories/d-link/dir-823g/SetStaticRouteSettings/README.mdrefdlink.com