Unauthenticated router takeover via HTTP request smuggling
Published Jun 9, 2026 · Updated Jun 9, 2026
HTTP request smuggling in NETGEAR CAX30, RAX30, RAX5, and RAXE300 firmware allows remote attackers on the local network to control routers. The CNA maps the flaw to HTTP request smuggling but does not disclose the affected endpoint or the conflicting request-parsing behavior. Local-network reachability is required; no credentials or user interaction are needed, and successful exploitation permits unauthorized operational changes.
Summary
What happened
HTTP request smuggling in NETGEAR CAX30, RAX30, RAX5, and RAXE300 firmware allows remote attackers on the local network to control routers. The CNA maps the flaw to HTTP request smuggling but does not disclose the affected endpoint or the conflicting request-parsing behavior. Local-network reachability is required; no credentials or user interaction are needed, and successful exploitation permits unauthorized operational changes.
The record
- CVE
- CVE-2026-9211
- Published
- Jun 9, 2026
- Updated
- Jun 9, 2026
- Vendor
- NETGEAR
- Product
- Nighthawk AX6 6-Stream WiFi 6 Cable Modem Router (CAX30)
- Classifications
- CWE-20, CAPEC-33, T1210
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 9, 2026CVE publishedPublication date reported by the CVE source.
- Jun 9, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=0 <V2.2.1.4
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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