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CVE-2026-121933— Linksys E5350 Setup Wizard apply.cgi save_settings missing authentication

Quick assessment

Affected
Linksys E5350
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linksys E5350 固件版本 1.0.00.037 中发现一个漏洞。该漏洞影响 Setup Wizard 组件中 文件内的 功能。攻击者可通过操纵 参数，导致身份验证失效。该攻击可远程发起，且利用代码已公开，可被实际利用。厂商已在此漏洞披露初期收到通知，但至今未作任何回应。

CVSS 10.0 · Critical

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Linksys E5350 1.0.00.037 affected
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I. Basic Information for CVE-2026-121933

Vulnerability Information
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Vulnerability Title
Linksys E5350 Setup Wizard apply.cgi save_settings missing authentication
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw has been found in Linksys E5350 1.0.00.037. This impacts the function save_settings of the file /wizard/apply.cgi of the component Setup Wizard. Executing a manipulation of the argument wizard_router_pwd can lead to missing authentication. The attack may be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linksys E5350 1.0.00.037 cpe:2.3:h:linksys:e5350:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-121933

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III. Intelligence Information for CVE-2026-121933

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Proof of Concept for CVE-2026-121933 (1)

Other References for CVE-2026-121933 (4)

Same Patch Batch · Linksys · 2026-11-04 · 8 CVEs total

CVE-2026-121615 10.0 CRITICAL Linksys E5600 Login mesh_login.cgi improper authentication
CVE-2026-121932 10.0 CRITICAL Linksys E5350 apply.cgi system os command injection
CVE-2026-121930 9.1 CRITICAL Linksys WRT54GL Ping Diagnostic apply.cgi system os command injection
CVE-2026-121931 9.1 CRITICAL Linksys WRT54GL Traceroute Diagnostic Function apply.cgi system os command injection
CVE-2026-121617 7.5 HIGH Linksys E5600 Header upload_fw.cgi init_multipart out-of-bounds write
CVE-2026-121616 5.3 MEDIUM Linksys E5600 JSON Request mesh_login.cgi strcpy out-of-bounds write
CVE-2026-121618 5.3 MEDIUM Linksys E5600 Factory Quality Control fqc.cgi information disclosure

IV. Related Vulnerabilities

Same product: E5350
Same vendor: Linksys
Same weakness: CWE-306