What is the CVSS score of CVE-2025-5600?

CVE-2025-5600 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.5%.

Which versions of Ex1200t Firmware are affected by CVE-2025-5600?

A critical remote code execution vulnerability in TOTOLIK EX1200T routers allows unauthenticated attackers to gain complete system control through a buffer overflow exploit that is publicly available…

Is there a public PoC exploit available for CVE-2025-5600?

Yes, a public proof-of-concept exploit is available for CVE-2025-5600. Prioritise patching immediately. EPSS: 0.5%.

How to fix or mitigate CVE-2025-5600?

Within 24 hours: Identify all TOTOLINK EX1200T 4.1.2cu.5232_B20210713 devices on your network using asset discovery tools and isolate affected devices from critical systems. Within 7 days: Implement network segmentation to restrict router access, apply WAF rules blocking requests to /cgi-bin/cstecgi.cgi with suspicious LangType parameters, and disable the setLanguageCfg function if possible through device configuration. Within 30 days: Contact TOTOLINK for patch availability status; if no patch is released, evaluate replacing affected devices with alternative router models from vendors with active security support, or implement proxy-based access controls to severely restrict administrative interfaces.

Ex1200t Firmware CVE-2025-5600

EUVD-2025-16902 CRITICAL

Buffer Overflow (CWE-119)

2025-06-04 cna@vuldb.com

Buffer Overflow TP-Link Ex1200t Firmware TOTOLINK

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

EUVD ID Assigned

Mar 14, 2026 - 17:29 euvd

EUVD-2025-16902

Analysis Generated

Mar 14, 2026 - 17:29 vuln.today

PoC Detected

Jun 10, 2025 - 15:09 vuln.today

Public exploit code

CVE Published

Jun 04, 2025 - 18:15 nvd

CRITICAL 9.8

DescriptionCVE.org

A vulnerability, which was classified as critical, has been found in TOTOLINK EX1200T 4.1.2cu.5232_B20210713. This issue affects the function setLanguageCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument LangType leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

AnalysisAI

Buffer overflow in TOTOLINK EX1200T via setLanguageCfg. EPSS 0.52%. PoC available.

Technical ContextAI

CWE-119.

RemediationAI

Update firmware.

CVE-2025-5600 vulnerability details – vuln.today

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Ex1200t Firmware CVE-2025-5600

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code