// For flags

CVE-2025-5901

TOTOLINK T10 POST Request cstecgi.cgi UploadCustomModule buffer overflow

Severity Score

7.4
*CVSS v4

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

A vulnerability has been found in TOTOLINK T10 4.1.8cu.5207 and classified as critical. This vulnerability affects the function UploadCustomModule of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument File leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

In TOTOLINK T10 4.1.8cu.5207 wurde eine kritische Schwachstelle gefunden. Hierbei betrifft es die Funktion UploadCustomModule der Datei /cgi-bin/cstecgi.cgi der Komponente POST Request Handler. Dank der Manipulation des Arguments File mit unbekannten Daten kann eine buffer overflow-Schwachstelle ausgenutzt werden. Umgesetzt werden kann der Angriff über das Netzwerk. Der Exploit steht zur öffentlichen Verfügung.

*Credits: Yangshuangning
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
System
Vulnerable | Subsequent
Confidentiality
High
None
Integrity
High
None
Availability
High
None
Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
System
Vulnerable | Subsequent
Confidentiality
High
None
Integrity
High
None
Availability
High
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
Poc
Automatable
No
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2025-06-09 CVE Reserved
  • 2025-06-09 CVE Published
  • 2025-06-10 CVE Updated
  • 2025-06-10 EPSS Updated
  • 2025-06-10 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
  • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
TOTOLINK
Search vendor "TOTOLINK"
 T10
Search vendor "TOTOLINK" for product "T10"
 4.1.8.5207
Search vendor "TOTOLINK" for product "T10" and version "4.1.8.5207"
en
Affected