D-Link DIR-823G 1.0.2B05_20181207 HNAP1 SetStaticRouteSettings strcpy PAddress/SubnetMask/Gateway stack-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.6$5k-$25k1.48

Summaryinfo

A vulnerability classified as very critical has been found in D-Link DIR-823G 1.0.2B05_20181207. This affects the function strcpy of the file /HNAP1/SetStaticRouteSettings of the component HNAP1. This manipulation of the argument PAddress/SubnetMask/Gateway causes stack-based overflow. This vulnerability appears as CVE-2026-90680. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability has been found in D-Link DIR-823G 1.0.2B05_20181207 and classified as very critical. Affected by this vulnerability is the function strcpy of the file /HNAP1/SetStaticRouteSettings of the component HNAP1. The manipulation of the argument PAddress/SubnetMask/Gateway with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-90680. The exploitation appears to be easy. The attack can be launched remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 09/13/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.9
VulDB Temp Score: 9.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/13/2026 Advisory disclosed
09/13/2026 +0 days VulDB entry created
09/13/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: dlink.com

Advisory: github.com
Status: Not defined

CVE: CVE-2026-90680 (🔒)
GCVE (CVE): GCVE-0-2026-90680
GCVE (VulDB): GCVE-100-403213

Entryinfo

Created: 09/13/2026 06:53
Changes: 09/13/2026 06:53 (55)
Complete: 🔍
Submitter: AmaIIl
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #914902: D-Link Router DIR823G_V1.0.2B05_20181207 Memory Corruption (by AmaIIl)

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