CVE Intelligence
High Input validation

CVE-2026-0404 — Insufficient input validation in NETGEAR Orbi routers

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.

Published Jan 13, 2026 · Updated Oct 13, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: NETGEAR

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.
How the score was calculated
  • EPSS 1.1% (30-day exploitation probability)+10
  • Technical severity (high)+6

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation
Not confirmed
Not in CISA KEV — an absence of record, not proof it is unexploited.
EPSS FIRST
1.06%
ahead of 64% of scored CVEs · Oct 14, 2026
Affects
NETGEAR
RBR750 and 23 more
CVSS base
8.0
High · 3 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation
None
none · proof-of-concept · active
Automatable
No
can an attacker script the kill-chain steps
Technical impact
Total
partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

  • Documented patch — kb.netgear.com (NIST National Vulnerability Database)
  • Documented patch — www.netgear.com (NIST National Vulnerability Database)
  • Documented patch — www.netgear.com (NIST National Vulnerability Database)
  • Documented patch — www.netgear.com (NIST National Vulnerability Database)
  • Documented patch — www.netgear.com (NIST National Vulnerability Database)
  • Documented patch — www.netgear.com (NIST National Vulnerability Database)
  • Documented patch — www.netgear.com (NIST National Vulnerability Database)
  • Documented patch — www.netgear.com (NIST National Vulnerability Database)
  • Documented patch — www.netgear.com (NIST National Vulnerability Database)
  • Documented patch — www.netgear.com (NIST National Vulnerability Database)
  • Documented patch — www.netgear.com (NIST National Vulnerability Database)
  • Documented patch — www.netgear.com (NIST National Vulnerability Database)
  • Documented patch — www.netgear.com (NIST National Vulnerability Database)

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

  1. Identify exposed assets running the affected vendor/product/version combinations (NETGEAR RBR750, Netgear Rbr750 Firmware, NETGEAR RBR840…).
  2. Apply the fixed version or the patch documented under Remediation.
  3. Search available logs for exploit probes matching the vulnerability class (input validation), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

VendorProductVersionsStatusSource
NETGEAR RBR750 < v7.2.8.5 Vulnerable CVE Program (cve.org) e CISA ADP
Netgear Rbr750 Firmware < 7.2.8.5 Vulnerable NIST National Vulnerability Database
NETGEAR RBR840 < v7.2.8.5 Vulnerable CVE Program (cve.org) e CISA ADP
Netgear Rbr840 Firmware < 7.2.8.5 Vulnerable NIST National Vulnerability Database
NETGEAR RBR850 < v7.2.8.5 Vulnerable CVE Program (cve.org) e CISA ADP
Netgear Rbr850 Firmware < 7.2.8.5 Vulnerable NIST National Vulnerability Database
NETGEAR RBR860 < v7.2.8.5 Vulnerable CVE Program (cve.org) e CISA ADP
Netgear Rbr860 Firmware < 7.2.8.5 Vulnerable NIST National Vulnerability Database
NETGEAR RBRE950 < v7.2.8.5 Vulnerable CVE Program (cve.org) e CISA ADP
Netgear Rbre950 Firmware < 7.2.8.5 Vulnerable NIST National Vulnerability Database
NETGEAR RBRE960 < v7.2.8.5 Vulnerable CVE Program (cve.org) e CISA ADP
Netgear Rbre960 Firmware < 7.2.8.5 Vulnerable NIST National Vulnerability Database
NETGEAR RBS750 < v7.2.8.5 Vulnerable CVE Program (cve.org) e CISA ADP
Netgear Rbs750 Firmware < 7.2.8.5 Vulnerable NIST National Vulnerability Database
NETGEAR RBS840 < v7.2.8.5 Vulnerable CVE Program (cve.org) e CISA ADP
Netgear Rbs840 Firmware < 7.2.8.5 Vulnerable NIST National Vulnerability Database
NETGEAR RBS850 < v7.2.8.5 Vulnerable CVE Program (cve.org) e CISA ADP
Netgear Rbs850 Firmware < 7.2.8.5 Vulnerable NIST National Vulnerability Database
NETGEAR RBS860 < v7.2.8.5 Vulnerable CVE Program (cve.org) e CISA ADP
Netgear Rbs860 Firmware < 7.2.8.5 Vulnerable NIST National Vulnerability Database
NETGEAR RBSE950 < v7.2.8.5 Vulnerable CVE Program (cve.org) e CISA ADP
Netgear Rbse950 Firmware < 7.2.8.5 Vulnerable NIST National Vulnerability Database
NETGEAR RBSE960 < v7.2.8.5 Vulnerable CVE Program (cve.org) e CISA ADP
Netgear Rbse960 Firmware < 7.2.8.5 Vulnerable NIST National Vulnerability Database

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector
Adjacent
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

ScoreVersionSeverityExpl.ImpactScored by
4.8 CVSS 4.0 Medium — — a2826606-91e7-4eb6-899e-8484bd4575d5 via NIST National Vulnerability Database
4.8 CVSS 4.0 Medium — — NETGEAR via CVE Program (cve.org) e CISA ADP
8.0 CVSS 3.1 High 2.1 5.9 nvd@nist.gov via NIST National Vulnerability Database
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (score shown at the top: nvd@nist.gov)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-20 · Improper Input Validation

Other CVEs with this weakness →

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 1.06%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

  • Not enough vector or weakness data: use the affected application’s logs as a starting point.
application logs

Timeline

What happened to this CVE, newest first.

  • 2026
  • Affected products added · netgear/rbre960, netgear/rbse960, netgear/rbr850, netgear/rbs850, netgear/rbr860, netgear/rbs860, netgear/rbre950, netge
    Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
  • SSVC assessment updated
    Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
  • Record published
    Oct 13, 2026
  • Fix documented
    Oct 13, 2026 · NIST National Vulnerability Database
  • CVSS changed · 8.0
    Oct 13, 2026 · NIST National Vulnerability Database
  • Source status changed · → Analyzed
    Oct 13, 2026 · NIST National Vulnerability Database
  • Record created in this database
    Oct 13, 2026 · NIST National Vulnerability Database
  • CVE published
    Jan 13, 2026 · NETGEAR

Source activity

Repeated readings are counted rather than listed.

  • 1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

13 on the record

Elsewhere on this site

NETGEAR
every CVE for this vendor
Input validation
same class
CWE-20
other pages naming this weakness

Related CVEs (same products)

  • CVE-2026-62655 A DoS vulnerability due to stack overflow exists in certain NETGEAR Orbi models Jul 14, 2026
  • CVE-2026-3088 Unauthenticated users can disrupt router operation Jun 9, 2026
  • CVE-2026-0415 Insufficient input validation vulnerability in certain Orbi routers Jun 9, 2026
  • CVE-2026-0418 Certain NETGEAR devices allow administrators to tamper with system Jun 9, 2026
  • CVE-2026-0413 Buffer overflow vulnerability in certain NETGEAR Nighthawk routers Jun 9, 2026
  • CVE-2026-0403 Insufficient input validation in NETGEAR Orbi routers Jan 13, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-0404 is "Insufficient input validation in NETGEAR Orbi routers", rated High. It affects RBR750 (NETGEAR); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 8.0 describes technical severity. EPSS 1.06% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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