Security readout for executives and security teams
Plain-English summary
CVE-2026-0404 affects specified NETGEAR Orbi routers when DHCPv6 is enabled. A nearby or LAN-connected authenticated attacker could inject operating-system commands through DHCPv6 handling. DHCPv6 is not enabled by default, reducing typical exposure. The business urgency is moderate: prioritize locations where these Orbi models are used and DHCPv6 is enabled.
Executive priority
Treat as a moderate-priority infrastructure issue. It is not default-exposed and requires local authenticated network access, but successful exploitation could compromise the router. Address during the next network maintenance window, faster where DHCPv6 is enabled or network access is broadly shared.
Technical view
The issue is insufficient input validation, mapped to CWE-20, in DHCPv6 functionality on listed NETGEAR Orbi models. CVSS 4.0 score is 4.8, with adjacent attack vector, low complexity, required privileges, no user interaction, and high impact to the vulnerable device’s confidentiality, integrity, and availability.
Likely exposure
Exposure is mainly WiFi-authenticated or LAN-adjacent attackers against affected Orbi models with DHCPv6 enabled. DHCPv6 is not enabled by default. Public source details do not provide vulnerable firmware ranges or fixed versions in the supplied bundle.
Exploitation context
The supplied data does not show CISA KEV listing or active exploitation. CVSS exploit maturity is marked unreported. The attacker must already be network-adjacent and authenticated over WiFi or present on LAN, which limits internet-wide exposure.
Researcher notes
Affected products listed include RBRE/RBSE 960, 950, RBR/RBS 850, 860, 750, and 840 families. The bundle marks product support pages as patch references but does not include exact fixed firmware versions. Avoid assuming internet exploitability because the attack vector is adjacent.
Mitigation direction
- Check NETGEAR’s January 2026 advisory for model-specific firmware guidance.
- Update affected Orbi devices using the relevant NETGEAR support page.
- Keep DHCPv6 disabled where it is not required.
- Restrict WiFi and LAN access to trusted users and devices.
- Prioritize remediation for offices using affected models with DHCPv6 enabled.
Validation and detection
- Inventory NETGEAR Orbi models listed in the advisory.
- Confirm whether DHCPv6 is enabled on each device.
- Compare installed firmware with NETGEAR advisory and product support guidance.
- Review WiFi and LAN access controls for untrusted access.
- Monitor vendor pages for fixed-version details if not currently shown.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-20: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-0404 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.8 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
4.8MediumVector: CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber
Source materials
- CVE List V5 sourceCVE List V5
- https://www.netgear.com/support/product/rbre960CVE reference · patch, product
- https://www.netgear.com/support/product/rbse960CVE reference · product, patch
- https://www.netgear.com/support/product/rbr850CVE reference · product, patch
- https://www.netgear.com/support/product/rbs850CVE reference · product, patch
- https://www.netgear.com/support/product/rbr860CVE reference · product, patch
- https://www.netgear.com/support/product/rbs860CVE reference · product, patch
- https://www.netgear.com/support/product/rbre950CVE reference · product, patch
- https://www.netgear.com/support/product/rbse950CVE reference · product, patch
- https://www.netgear.com/support/product/rbr750CVE reference · product, patch
- https://www.netgear.com/support/product/rbs750CVE reference · product, patch
- https://www.netgear.com/support/product/rbr840CVE reference · product, patch
- https://www.netgear.com/support/product/rbs840CVE reference · product, patch
- https://kb.netgear.com/000070442/January-2026-NETGEAR-Security-AdvisoryCVE reference · vendor-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.