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CVE-2024-7335— TOTOLINK EX200 getSaveConfig buffer overflow

Quick assessment

Affected
TOTOLINK EX200
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 EX200是中国吉翁电子（TOTOLINK）公司的一款 2.4G 无线 N 范围扩展器。旨在扩大现有Wi-Fi网络的覆盖范围。 TOTOLINK EX200 4.0.3c.7646_B20201211版本存在安全漏洞，该漏洞源于对参数http_host的操作会导致缓冲区溢出。

CVSS 8.8 · High EPSS 1.16% · P66

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2024-7335

Vulnerability Information
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Vulnerability Title
TOTOLINK EX200 getSaveConfig buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability classified as critical has been found in TOTOLINK EX200 4.0.3c.7646_B20201211. Affected is the function getSaveConfig of the file /cgi-bin/cstecgi.cgi?action=save&setting. The manipulation of the argument http_host leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. VDB-273258 is the identifier assigned to this vulnerability. NOTE: 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:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
TOTOLINK EX200 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK EX200是中国吉翁电子（TOTOLINK）公司的一款 2.4G 无线 N 范围扩展器。旨在扩大现有Wi-Fi网络的覆盖范围。 TOTOLINK EX200 4.0.3c.7646_B20201211版本存在安全漏洞，该漏洞源于对参数http_host的操作会导致缓冲区溢出。
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 EX200 4.0.3c.7646_B20201211 -

II. Public POCs for CVE-2024-7335

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7521 chars
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III. Intelligence Information for CVE-2024-7335

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Vendor Advisories for CVE-2024-7335 (3)

Other References for CVE-2024-7335 (1)

Same Patch Batch · TOTOLINK · 2024-08-01 · 8 CVEs total

CVE-2024-7332 9.8 CRITICAL TOTOLINK CP450 Telnet Service product.ini hard-coded password
CVE-2024-7331 8.8 HIGH TOTOLINK A3300R cstecgi.cgi UploadCustomModule buffer overflow
CVE-2024-7333 8.8 HIGH TOTOLINK N350RT cstecgi.cgi setParentalRules buffer overflow
CVE-2024-7334 8.8 HIGH TOTOLINK EX1200L cstecgi.cgi UploadCustomModule buffer overflow
CVE-2024-7336 8.8 HIGH TOTOLINK EX200 cstecgi.cgi loginauth buffer overflow
CVE-2024-7337 8.8 HIGH TOTOLINK EX1200L cstecgi.cgi loginauth buffer overflow
CVE-2024-7338 8.8 HIGH TOTOLINK EX1200L cstecgi.cgi setParentalRules buffer overflow

IV. Related Vulnerabilities

Same product: EX200
Same vendor: TOTOLINK
Same weakness: CWE-120

V. Comments for CVE-2024-7335

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