CVE-2026-11738 — Insufficient input validation in certain NETGEAR Nighthawk routers allows administrators to tamper with the device.
Insufficient input validation vulnerability in the listed NETGEAR models allows authenticated administrators connected to the local network to make unauthorized modification to router software and functionality.
Who exploits it and how urgent it is
A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.
How the score was calculated
- Technical severity (medium)+3
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.
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.
Remediation
Fixes and mitigations documented by the sources — linked to the original advisory.
No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.
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.
- Identify exposed assets running the affected vendor/product/version combinations (Netgear Be9300 Firmware, Netgear Mr60 Firmware, Netgear Ms60 Firmware…).
- No fix documented in the sources: reduce exposure and monitor the vendor advisory.
- 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.
| Vendor | Product | Versions | Status | Source |
|---|---|---|---|---|
| Netgear | Be9300 Firmware | < 1.0.1.84 | Vulnerable | NIST National Vulnerability Database |
| Netgear | Mr60 Firmware | < 1.1.8.142 | Vulnerable | NIST National Vulnerability Database |
| Netgear | Ms60 Firmware | < 1.1.8.142 | Vulnerable | NIST National Vulnerability Database |
| Netgear | R6700ax Firmware | < 1.0.18.164 | Vulnerable | NIST National Vulnerability Database |
| NETGEAR | R7000 | versions not specified by the source | Vulnerable | CVE Program (cve.org) e CISA ADP |
| Netgear | Rax10 Firmware | < 1.0.5.50 | Vulnerable | NIST National Vulnerability Database |
| Netgear | Rax120 Firmware | < 1.2.10.56 | Vulnerable | NIST National Vulnerability Database |
| Netgear | Rax120v2 Firmware | < 1.2.10.56 | Vulnerable | NIST National Vulnerability Database |
| Netgear | Rax20 Firmware | < 1.0.17.142 | Vulnerable | NIST National Vulnerability Database |
| Netgear | Rax28 Firmware | < 1.0.14.108 | Vulnerable | NIST National Vulnerability Database |
| Netgear | Rax29 Firmware | < 1.0.14.108 | Vulnerable | NIST National Vulnerability Database |
| Netgear | Rax30 Firmware | < 1.0.14.108 | Vulnerable | NIST National Vulnerability Database |
| Netgear | Rax36s Firmware | < 1.0.5.50 | Vulnerable | NIST National Vulnerability Database |
| Netgear | Rax43 Firmware | < 1.0.17.142 | Vulnerable | NIST National Vulnerability Database |
| Netgear | Rax45 Firmware | < 1.0.17.142 | Vulnerable | NIST National Vulnerability Database |
| Netgear | Rax50 Firmware | < 1.0.17.142 | Vulnerable | NIST National Vulnerability Database |
| Netgear | Rax70 Firmware | < 1.0.19.172 | Vulnerable | NIST National Vulnerability Database |
| NETGEAR | RAXE500 | < V1.2.14.114 | Vulnerable | CVE Program (cve.org) e CISA ADP |
| Netgear | Rbr760 Firmware | < 6.3.8.11 | Vulnerable | NIST National Vulnerability Database |
| Netgear | Rbs760 Firmware | < 6.3.8.11 | Vulnerable | NIST National Vulnerability Database |
| Netgear | Rs100 Firmware | < 1.0.1.80 | Vulnerable | NIST National Vulnerability Database |
| Netgear | Rs200 Firmware | < 1.0.1.90 | Vulnerable | NIST National Vulnerability Database |
| Netgear | Rs280 Firmware | < 1.0.1.90 | Vulnerable | NIST National Vulnerability Database |
| Netgear | Rs300 Firmware | < 1.0.1.90 | Vulnerable | NIST National Vulnerability Database |
| Netgear | Rs500 Firmware | < 1.0.1.90 | Vulnerable | NIST National Vulnerability Database |
| Netgear | Rs600 Firmware | < 1.0.1.90 | Vulnerable | NIST National Vulnerability Database |
| Netgear | Rs70 Firmware | < 1.0.1.80 | Vulnerable | NIST National Vulnerability Database |
| NETGEAR | RS700 | < V1.0.7.66 | Vulnerable | CVE Program (cve.org) e CISA ADP |
| Netgear | Rs90 Firmware | < 1.0.1.80 | Vulnerable | NIST National Vulnerability Database |
Attack characteristics
The CVSS vector, decoded. It describes the attack, not your exposure to it.
Every base score collected
Sources score independently and may disagree; each row says who scored it and under which version.
| Score | Version | Severity | Expl. | Impact | Scored by |
|---|---|---|---|---|---|
| 4.3 | CVSS 4.0 | Medium | — | — | a2826606-91e7-4eb6-899e-8484bd4575d5 via NIST National Vulnerability Database |
| 4.3 | CVSS 4.0 | Medium | — | — | NETGEAR via CVE Program (cve.org) e CISA ADP |
| 4.4 | CVSS 3.1 | Medium | 0.8 | 3.6 | nvd@nist.gov via NIST National Vulnerability Database |
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N (score shown at the top: nvd@nist.gov) Weakness MITRE
Weakness class according to MITRE’s CWE catalog.
Detection
Read off the CVSS vector and the weakness class. Starting points, not tested rules.
- Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.
Timeline
What happened to this CVE, newest first.
- 2026
- Affected products added · netgear/r7000, netgear/raxe500, netgear/rs700
- SSVC assessment updated
- Record published
- CVSS changed · 4.4
- Source status changed · → Analyzed
- Record created in this database
- CVE published
Source activity
Repeated readings are counted rather than listed.
- 1× Official description updated · Oct 15, 2026 – Oct 15, 2026
References
4 on the record
Elsewhere on this site
Related CVEs (same products)
- Medium CVE-2026-9218 Insufficient input validation vulnerability in Certain NETGEAR routers allows unauthorized access 2d
- Low CVE-2026-9216 Insufficient input validation vulnerability exists in certain NETGEAR RAX Models Sep 8, 2026
- Medium CVE-2026-9214 Insufficient input validation in NETGEAR R7000 router allows administrators to tamper with the device. Aug 11, 2026
- Medium CVE-2026-11739 OS Command Injection in Netgear Ms90 Firmware Aug 11, 2026
- Medium CVE-2026-11814 Command injection vulnerability in certain NETGEAR Nighthawk and Orbi routers Aug 11, 2026
- Medium CVE-2026-11737 Some NETGEAR Nighthawk devices allow administrators to tamper with the device Aug 11, 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 FIRST EPSS score.
- No fixed version, patch or mitigation documented.
- 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-2026-11738 is "Insufficient input validation in certain NETGEAR Nighthawk routers allows administrators to tamper with the device.", rated Medium. It affects Be9300 Firmware (Netgear); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 4.4 describes technical severity. 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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