PatchSiren cyber security CVE debrief

CVE-2026-9211 NETGEAR CVE debrief

CVE-2026-9211 is a medium-severity vulnerability (CVSS Score: 5.2) that allows an unauthenticated user on the local network to gain control of the router and make unauthorized changes to its operation. The vulnerability was published on 2026-06-09T17:17:51.380Z and last modified on 2026-06-10T19:16:39.107Z. The affected vendor is currently listed as Unknown Vendor, but evidence suggests it may be Netgear. The CVE record and NVD detail can be found at [cve-org](https://www.cve.org/CVERecord?id=CVE-2026-9211) and [nvd](https://nvd.nist.gov/vuln/detail/CVE-2026-9211), respectively.

Vendor: NETGEAR
Product: CAX30
CVSS: MEDIUM 5.2
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-06-09
Original CVE updated: 2026-06-18
Advisory published: 2026-06-09
Advisory updated: 2026-06-18

Who should care

Administrators and users of potentially affected Netgear router products, such as CAX30, RAX30, RAX5, and RAXE300, should review the vulnerability details and apply patches or mitigations as recommended by the vendor.

Technical summary

The vulnerability has a CVSS vector of CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:D/RE:L/U:Amber. It is classified under CWE-20.

Defensive priority

Medium

Recommended defensive actions

Review the CVE record at [cve-org] and NVD detail at [nvd] for the latest information.
Check the Netgear support pages at [ref-5], [ref-6], [ref-7], and [ref-8] for potential patches or mitigations.
Consult the Netgear security advisory at [ref-4] for guidance on addressing the vulnerability.

Evidence notes

The vendor is currently listed as Unknown Vendor, but evidence suggests it may be Netgear.

Sources and references

Verified primary and authoritative sources

CVE-2026-9211 CVE Program record
Publisher, destination, and source semantics verified

URL: https://www.cve.org/CVERecord?id=CVE-2026-9211

CVE Program - Official CVE Program record with source-provided CVE metadata.
CVE-2026-9211 NVD vulnerability detail
Publisher, destination, and source semantics verified

URL: https://nvd.nist.gov/vuln/detail/CVE-2026-9211

NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Source reference
Unverified legacy reference

URL: https://kb.netgear.com/000070811/June-2026-NETGEAR-Security-Advisory

a2826606-91e7-4eb6-899e-8484bd4575d5
Source reference
Unverified legacy reference

URL: https://www.netgear.com/support/product/cax30/

a2826606-91e7-4eb6-899e-8484bd4575d5
Source reference
Unverified legacy reference

URL: https://www.netgear.com/support/product/rax30/

a2826606-91e7-4eb6-899e-8484bd4575d5
Source reference
Unverified legacy reference

URL: https://www.netgear.com/support/product/rax5/

a2826606-91e7-4eb6-899e-8484bd4575d5
Source reference
Unverified legacy reference

URL: https://www.netgear.com/support/product/raxe300/

a2826606-91e7-4eb6-899e-8484bd4575d5

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.