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CVE-2025-5911— TOTOLINK EX1200T HTTP POST Request formDMZ buffer overflow

Quick assessment

Affected
TOTOLINK EX1200T
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 EX1200T是中国吉翁电子（TOTOLINK）公司的一款 Wi-Fi 范围扩展器。 TOTOLINK EX1200T 4.1.2cu.5232_B20210713及之前版本存在安全漏洞，该漏洞源于HTTP POST Request Handler组件中文件/boafrm/formDMZ存在缓冲区溢出。

CVSS 8.8 · High EPSS 0.91% · P57
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I. Basic Information for CVE-2025-5911

Vulnerability Information
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Vulnerability Title
TOTOLINK EX1200T HTTP POST Request formDMZ buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in TOTOLINK EX1200T up to 4.1.2cu.5232_B20210713 and classified as critical. Affected by this issue is some unknown functionality of the file /boafrm/formDMZ of the component HTTP POST Request Handler. The manipulation leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the 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
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 EX1200T 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK EX1200T是中国吉翁电子（TOTOLINK）公司的一款 Wi-Fi 范围扩展器。 TOTOLINK EX1200T 4.1.2cu.5232_B20210713及之前版本存在安全漏洞，该漏洞源于HTTP POST Request Handler组件中文件/boafrm/formDMZ存在缓冲区溢出。
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 EX1200T 4.1.2cu.5232_B20210713 -

II. Public POCs for CVE-2025-5911

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 127699 chars
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Exploit chain & mitigation
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III. Intelligence Information for CVE-2025-5911

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Proof of Concept for CVE-2025-5911 (1)

Same Patch Batch · TOTOLINK · 2025-06-10 · 7 CVEs total

CVE-2025-5904 8.8 HIGH TOTOLINK T10 POST Request cstecgi.cgi setWiFiMeshName buffer overflow
CVE-2025-5905 8.8 HIGH TOTOLINK T10 POST Request cstecgi.cgi setWiFiRepeaterCfg buffer overflow
CVE-2025-5907 8.8 HIGH TOTOLINK EX1200T HTTP POST Request formFilter buffer overflow
CVE-2025-5908 8.8 HIGH TOTOLINK EX1200T HTTP POST Request formIpQoS buffer overflow
CVE-2025-5909 8.8 HIGH TOTOLINK EX1200T HTTP POST Request formReflashClientTbl buffer overflow
CVE-2025-5910 8.8 HIGH TOTOLINK EX1200T HTTP POST Request formWsc buffer overflow

IV. Related Vulnerabilities

Same product: EX1200T
Same vendor: TOTOLINK
Same weakness: CWE-120

V. Comments for CVE-2025-5911

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