Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-5105— Totolink A3300R Parameter cstecgi.cgi setVpnPassCfg command injection

Quick assessment

Affected
Totolink A3300R
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 A3300R是中国吉翁电子（TOTOLINK）公司的一款无线路由器。 TOTOLINK A3300R 17.0.0cu.557_b20221024版本存在命令注入漏洞，该漏洞源于对文件/cgi-bin/cstecgi.cgi中参数pptpPassThru的错误操作，可能导致命令注入。

CVSS 6.3 · Medium EPSS 3.64% · P89

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-5105

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Totolink A3300R Parameter cstecgi.cgi setVpnPassCfg command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was detected in Totolink A3300R 17.0.0cu.557_b20221024. The affected element is the function setVpnPassCfg of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. Performing a manipulation of the argument pptpPassThru results in command injection. It is possible to initiate the attack 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
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
Vulnerability Title
TOTOLINK A3300R 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK A3300R是中国吉翁电子（TOTOLINK）公司的一款无线路由器。 TOTOLINK A3300R 17.0.0cu.557_b20221024版本存在命令注入漏洞，该漏洞源于对文件/cgi-bin/cstecgi.cgi中参数pptpPassThru的错误操作，可能导致命令注入。
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 A3300R 17.0.0cu.557_b20221024 cpe:2.3:o:totolink:a3300r_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-5105

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-5105

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-5105 (2)

Proof of Concept for CVE-2026-5105 (1)

Same Patch Batch · Totolink · 2026-03-30 · 4 CVEs total

CVE-2026-5102 6.3 MEDIUM Totolink A3300R Parameter cstecgi.cgi setSmartQosCfg command injection
CVE-2026-5103 6.3 MEDIUM Totolink A3300R cstecgi.cgi setUPnPCfg command injection
CVE-2026-5104 6.3 MEDIUM Totolink A3300R cstecgi.cgi setStaticRoute command injection

IV. Related Vulnerabilities

Same product: A3300R
Same vendor: Totolink
Same weakness: CWE-77

V. Comments for CVE-2026-5105

No comments yet

Leave a comment