NETGEAR RBS840 prior 7.2.8.5 DHCPv6 input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.8$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in NETGEAR RBRE960, RBSE960, RBR850, RBS850, RBR860, RBS860, RBRE950, RBSE950, RBR750, RBS750, RBR840 and RBS840. Affected by this vulnerability is an unknown functionality of the component DHCPv6. Executing a manipulation can lead to input validation. The identification of this vulnerability is CVE-2026-0404. The attack needs to be done within the local network. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical was found in NETGEAR RBRE960, RBSE960, RBR850, RBS850, RBR860, RBS860, RBRE950, RBSE950, RBR750, RBS750, RBR840 and RBS840. This vulnerability affects an unknown part of the component DHCPv6. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An insufficient input validation vulnerability in NETGEAR Orbi devices' DHCPv6 functionality allows network adjacent attackers authenticated over WiFi or on LAN to execute OS command injections on the router. DHCPv6 is not enabled by default.

The weakness was shared by Hyunseok Yun. The advisory is available at netgear.com. This vulnerability was named CVE-2026-0404 since 12/03/2025. The exploitation appears to be easy. The attack needs to be done within the local network. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 02/12/2026).

Upgrading to version 7.2.8.5 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.8

VulDB Base Score: 8.0
VulDB Temp Score: 7.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.0
NVD Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: RBRE960/RBSE960/RBR850/RBS850/RBR860/RBS860/RBRE950/RBSE950/RBR750/RBS750/RBR840/RBS840 7.2.8.5

Timelineinfo

12/03/2025 CVE reserved
01/13/2026 +41 days Advisory disclosed
01/13/2026 +0 days VulDB entry created
02/12/2026 +30 days VulDB entry last update

Sourcesinfo

Vendor: netgear.com

Advisory: netgear.com
Researcher: Hyunseok Yun
Status: Confirmed

CVE: CVE-2026-0404 (🔒)
GCVE (CVE): GCVE-0-2026-0404
GCVE (VulDB): GCVE-100-340714

Entryinfo

Created: 01/13/2026 18:11
Updated: 02/12/2026 19:30
Changes: 01/13/2026 18:11 (73), 01/16/2026 04:38 (1), 02/12/2026 19:30 (10)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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