CVE-2026-116505— TOTOLINK A950RG device-information udhcpd.leases getDeviceInfo command injection

Quick assessment

Affected

TOTOLINK A950RG

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 TOTOLINK A950RG 固件版本 4.1.2cu.5268_B20221104 中发现一个安全漏洞。该漏洞影响 device-information Handler 组件中位于 /var/lib/misc/udhcpd.leases 文件的 getDeviceInfo 功能。攻击者可通过篡改 MAC 地址参数引发命令注入。此攻击可远程发起，且利用方法已公开，可能被实际利用。

CVSS 9.1 · Critical Updated Oct 27, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

TOTOLINK A950RG device-information udhcpd.leases getDeviceInfo command injection

Source: CVE Program / CVE List V5

Vulnerability Description

A vulnerability was found in TOTOLINK A950RG 4.1.2cu.5268_B20221104. This impacts the function getDeviceInfo of the file /var/lib/misc/udhcpd.leases of the component device-information Handler. The manipulation of the argument MAC address results in command injection. The attack can be launched remotely. The exploit has been made public and could be used.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Source: CVE Program / CVE List V5

Vulnerability Type

在命令中使用的特殊元素转义处理不恰当(命令注入)

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
TOTOLINK	A950RG	4.1.2cu.5268_B20221104	`cpe:2.3:o:totolink:a950rg_firmware::::::::`

II. Public POCs for CVE-2026-116505

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-116505

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Other References for CVE-2026-116505 (4)

https://gist.github.com/H3rmesk1t/836a8c4be24fcc4b7041b4bbe9cbb178 exploit
https://vuldb.com/cve/CVE-2026-116505 third-party-advisory
https://vuldb.com/vuln/426403/cti signature permissions-required
https://vuldb.com/submit/1022554 third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-116505

Same Patch Batch · TOTOLINK · 2026-10-26 · 5 CVEs total

CVE-2026-116508	10.0 CRITICAL	TOTOLINK A950RG Device-Information CGI infostat.cgi sub_402340 stack-based overflow
CVE-2026-116506	9.9 CRITICAL	TOTOLINK A950RG firewall.so apmib_set command injection
CVE-2026-116504	9.9 CRITICAL	TOTOLINK A950RG Cloud Upgrade upgrade.so setCloudUpgradeFW command injection
CVE-2026-116507	5.3 MEDIUM	TOTOLINK A950RG global.so getLanguageCfg information disclosure

IV. Related Vulnerabilities

Same product: A950RG

Same vendor: TOTOLINK

Same weakness: CWE-77