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

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2025-12241— TOTOLINK A3300R POST Parameter cstecgi.cgi setLanguageCfg stack-based overflow

Quick assessment

Affected
TOTOLINK A3300R
Exploitation
Public or AI PoC available; prioritize validation
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版本存在安全漏洞，该漏洞源于对文件/cgi-bin/cstecgi.cgi中参数lang的错误操作，可能导致栈缓冲区溢出。

CVSS 8.8 · High EPSS 0.95% · P58
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2025-12241

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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 POST Parameter cstecgi.cgi setLanguageCfg stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was detected in TOTOLINK A3300R 17.0.0cu.557_B20221024. This impacts the function setLanguageCfg of the file /cgi-bin/cstecgi.cgi of the component POST Parameter Handler. The manipulation of the argument lang results in stack-based buffer overflow. It is possible to launch 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:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
TOTOLINK A3300R 安全漏洞
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版本存在安全漏洞，该漏洞源于对文件/cgi-bin/cstecgi.cgi中参数lang的错误操作，可能导致栈缓冲区溢出。
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 -

II. Public POCs for CVE-2025-12241

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7543 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2025-12241

请登录查看更多情报信息。

Vendor Advisories for CVE-2025-12241 (2)

News Coverage for CVE-2025-12241 (1)

Same Patch Batch · TOTOLINK · 2025-10-27 · 6 CVEs total

CVE-2025-12239 8.8 HIGH TOTOLINK A3300R cstecgi.cgi setDdnsCfg buffer overflow
CVE-2025-12240 8.8 HIGH TOTOLINK A3300R cstecgi.cgi setDmzCfg buffer overflow
CVE-2025-12258 8.8 HIGH TOTOLINK A3300R POST Parameter cstecgi.cg setOpModeCfg stack-based overflow
CVE-2025-12259 8.8 HIGH TOTOLINK A3300R POST Parameter cstecgi.cgi setScheduleCfg stack-based overflow
CVE-2025-12260 8.8 HIGH TOTOLINK A3300R POST Parameter cstecgi.cgi setSyslogCfg stack-based overflow

IV. Related Vulnerabilities

Same product: A3300R
Same vendor: TOTOLINK
Same weakness: CWE-121

V. Comments for CVE-2025-12241

No comments yet

Leave a comment