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CVE-2026-121932— Linksys E5350 apply.cgi system os command injection

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）中发现了一个安全漏洞。该漏洞影响文件中的函数。通过对参数或进行篡改，可导致操作系统命令注入。攻击者可远程发起此攻击。该漏洞的利用方式现已公开，可能被恶意利用。厂商虽已提前收到此漏洞披露信息，但至今未作出任何回应。

CVSS 10.0 · Critical Updated Nov 05, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

Vendor	Product	Version Range	Status
Linksys	E5350	`1.0.00.037`	affected

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Vulnerability Information

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Vulnerability Title

Linksys E5350 apply.cgi system os command injection

Source: CVE Program / CVE List V5

Vulnerability Description

A vulnerability was detected in Linksys E5350 1.0.00.037. This affects the function system of the file /wizard/apply.cgi. Performing a manipulation of the argument ping_ip/traceroute_ip results in os command injection. The attack may be initiated remotely. The exploit is now public 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

OS命令中使用的特殊元素转义处理不恰当(OS命令注入)

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-2026-121932

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-121932

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Vendor Advisories for CVE-2026-121932 (1)

CVE-2026-121932 | Linksys E5350 1.0.00.037 /wizard/apply.cgi system ping_ip/traceroute_ip os command injection vdb-entry technical-description

Other References for CVE-2026-121932 (5)

https://github.com/Zimo-666/E5350-cves/tree/main/01-wizard-preauth-command-injection exploit
https://vuldb.com/cve/CVE-2026-121932 third-party-advisory
https://vuldb.com/vuln/431044/cti signature permissions-required
https://vuldb.com/submit/1024277 third-party-advisory
https://vuldb.com/submit/1024275 third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-121932

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-2026-121933	10.0 CRITICAL	Linksys E5350 Setup Wizard apply.cgi save_settings missing authentication
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

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

Same vendor: Linksys

Same weakness: CWE-78