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CVE-2026-90680

CRITICAL
9.9NVD

Summary

generated automatically from NVD data

D-Link DIR-823G firmware 1.0.2B05_20181207 contains a stack-based buffer overflow in the HNAP1 component, in the /HNAP1/SetStaticRouteSettings handler. A strcpy call mishandles the PAddress, SubnetMask and Gateway arguments, and the flaw can be triggered remotely over the network. The issue is classified as CWE-119 and carries a CVSS v3.1 score of 9.9 (CRITICAL).

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.

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EPSS · FIRST.org

0.91%probability of exploitation in the next 30 days

Higher than 59% of scored CVEs

EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-10-16, recomputed daily by FIRST.org.

In-depth analysis on cveo.tech

We've published a detailed analysis of this CVE — exploitation, IOCs and mitigation.

CVSS v3.1 Score

9.9
/ 10.0
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Information

Published
14 sept. 2026
Updated
16 sept. 2026
Status
Deferred
Source
cna@vuldb.com

Weaknesses (CWE)

CWE-119CWE-121

Similar CVEs

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