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CVE-2026-9515— Totolink CA750-PoE Setting cstecgi.cgi setUnloadUserData os command injection

Quick assessment

Affected
Totolink CA750-PoE
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.

TOTOLINK CA750-PoE是中国吉翁电子（TOTOLINK）公司的一款无线网络接入设备。 TOTOLINK CA750-PoE 6.2c.510版本存在操作系统命令注入漏洞，该漏洞源于文件/cgi-bin/cstecgi.cgi中setUnloadUserData函数对参数plugin_version的操作导致os命令注入。

CVSS 6.3 · Medium EPSS 1.77% · P77

Affected Version Matrix 1

VendorProduct Version RangeStatus
Totolink CA750-PoE 6.2c.510 affected
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I. Basic Information for CVE-2026-9515

Vulnerability Information
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Vulnerability Title
Totolink CA750-PoE Setting cstecgi.cgi setUnloadUserData os command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was detected in Totolink CA750-PoE 6.2c.510. The affected element is the function setUnloadUserData of the file /cgi-bin/cstecgi.cgi of the component Setting Handler. The manipulation of the argument plugin_version results in os command injection. The attack may be launched remotely. The exploit is now public and may be used.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
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
Vulnerability Title
TOTOLINK CA750-PoE 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK CA750-PoE是中国吉翁电子（TOTOLINK）公司的一款无线网络接入设备。 TOTOLINK CA750-PoE 6.2c.510版本存在操作系统命令注入漏洞，该漏洞源于文件/cgi-bin/cstecgi.cgi中setUnloadUserData函数对参数plugin_version的操作导致os命令注入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Totolink CA750-PoE 6.2c.510 cpe:2.3:a:totolink:ca750-poe:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-9515

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III. Intelligence Information for CVE-2026-9515

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Proof of Concept for CVE-2026-9515 (1)

Same Patch Batch · Totolink · 2026-05-25 · 20 CVEs total

CVE-2026-9457 9.8 CRITICAL Totolink A8000RU Web Management cstecgi.cgi UploadFirmwareFile os command injection
CVE-2026-9408 9.8 CRITICAL Totolink A8000RU Web Management cstecgi.cgi setStaticDhcpRules os command injection
CVE-2026-9432 9.8 CRITICAL Totolink A8000RU Web Management cstecgi.cgi setWiFiAdvancedCfg os command injection
CVE-2026-9433 9.8 CRITICAL Totolink A8000RU Web Management cstecgi.cgi setMacFilterRules os command injection
CVE-2026-9434 9.8 CRITICAL Totolink A8000RU Web Management cstecgi.cgi setWiFiWpsCfg os command injection
CVE-2026-9435 9.8 CRITICAL Totolink A8000RU Web Management cstecgi.cgi setQosCfg os command injection
CVE-2026-9436 9.8 CRITICAL Totolink A8000RU Web Management cstecgi.cgi setL2tpServerCfg os command injection
CVE-2026-9454 9.8 CRITICAL Totolink A8000RU Web Management cstecgi.cgi setOpenVpnCertGenerationCfg os command injecti
CVE-2026-9455 9.8 CRITICAL Totolink A8000RU Web Management cstecgi.cgi UploadOpenVpnCert os command injection
CVE-2026-9456 9.8 CRITICAL Totolink A8000RU Web Management cstecgi.cgi setOpenVpnCfg os command injection
CVE-2026-9458 9.8 CRITICAL Totolink A8000RU Web Management cstecgi.cgi setWanCfg os command injection
CVE-2026-9475 9.8 CRITICAL Totolink A8000RU Web Management cstecgi.cgi setIpQosRules os command injection
CVE-2026-9476 9.8 CRITICAL Totolink A8000RU Web Management cstecgi.cgi setPasswordCfg os command injection
CVE-2026-9477 9.8 CRITICAL Totolink A8000RU Web Management cstecgi.cgi setAccessDeviceCfg os command injection
CVE-2026-9478 9.8 CRITICAL Totolink A8000RU Web Management cstecgi.cgi setParentalRules os command injection
CVE-2026-9514 6.3 MEDIUM Totolink CA750-PoE Setting cstecgi.cgi setNetworkDiag os command injection
CVE-2026-9511 6.3 MEDIUM Totolink CA750-PoE Setting cstecgi.cgi setWebWlanIdx os command injection
CVE-2026-9512 6.3 MEDIUM Totolink CA750-PoE Setting cstecgi.cgi setPasswordCfg os command injection
CVE-2026-9513 6.3 MEDIUM Totolink CA750-PoE Setting cstecgi.cgi NTPSyncWithHost os command injection

IV. Related Vulnerabilities

Same product: CA750-PoE
Same vendor: Totolink
Same weakness: CWE-78

V. Comments for CVE-2026-9515

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