TOTOLINK T10 4.1.8cu.5207 POST Request /cgi-bin/cstecgi.cgi UploadCustomModule File buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability was found in TOTOLINK T10 4.1.8cu.5207 and classified as critical. This issue 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 identification of this vulnerability is CVE-2025-5901. The attack may be initiated remotely. Furthermore, there is an exploit available. Once again VulDB remains the best source for vulnerability data.

Detailsinfo

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 with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is available at candle-throne-f75.notion.site. This vulnerability was named CVE-2025-5901. The exploitation appears to be easy. The attack can be initiated remotely. Technical details and also a public exploit are known.

It is possible to download the exploit at candle-throne-f75.notion.site. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-17591). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.4

VulDB Base Score: 8.8
VulDB Temp Score: 8.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/09/2025 Advisory disclosed
06/09/2025 +0 days VulDB entry created
06/16/2025 +7 days VulDB entry last update

Sourcesinfo

Vendor: totolink.net

Advisory: candle-throne-f75.notion.site
Status: Not defined

CVE: CVE-2025-5901 (🔒)
GCVE (CVE): GCVE-0-2025-5901
GCVE (VulDB): GCVE-100-311674
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/09/2025 10:03 AM
Updated: 06/16/2025 04:46 PM
Changes: 06/09/2025 10:03 AM (57), 06/10/2025 02:14 AM (1), 06/10/2025 12:26 PM (31), 06/16/2025 04:46 PM (1)
Complete: 🔍
Submitter: Yangshuangning
Cache ID: 18:AA8:40

Submitinfo

Accepted

  • Submit #592243: TOTOLINK T10 V2_Firmware V2_V4.1.8cu.5207 Buffer Overflow (by Yangshuangning)

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