VDB-312608 · Submit #592922 · CVE-2025-6139

TOTOLINK T10 4.1.8cu.5207 /etc/shadow.sample hard-coded password

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.7	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in TOTOLINK T10 4.1.8cu.5207. Affected is an unknown function of the file /etc/shadow.sample. Such manipulation leads to hard-coded password. This vulnerability is listed as CVE-2025-6139. The attack must be carried out from within the local network. In addition, an exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in TOTOLINK T10 4.1.8cu.5207. Affected by this issue is some unknown functionality of the file /etc/shadow.sample. The manipulation with an unknown input leads to a hard-coded password vulnerability. Using CWE to declare the problem leads to CWE-259. The product contains a hard-coded password, which it uses for its own inbound authentication or for outbound communication to external components. Impacted is confidentiality, integrity, and availability.

The advisory is shared for download at candle-throne-f75.notion.site. This vulnerability is handled as CVE-2025-6139. The exploitation is known to be difficult. The attack can only be initiated within the local network. Additional levels of successful authentication are necessary for exploitation. Technical details as well as a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1078.001.

The exploit is available 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.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

TOTOLINK

Name

Version

4.1.8cu.5207

License

commercial

Website

Vendor: https://www.totolink.net/

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: 3.9
VulDB Meta Temp Score: 3.7

VulDB Base Score: 3.9
VulDB Temp Score: 3.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 3.9
CNA Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Hard-coded password
CWE: CWE-259 / CWE-255
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/15/2025 🔍
06/15/2025 +0 days 🔍
06/26/2025 +11 days 🔍

Sourcesinfo

Vendor: totolink.net

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

CVE: CVE-2025-6139 (🔍)
GCVE (CVE): GCVE-0-2025-6139
GCVE (VulDB): GCVE-100-312608
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/15/2025 12:57
Updated: 06/26/2025 21:47
Changes: 06/15/2025 12:57 (54), 06/26/2025 21:47 (30)
Complete: 🔍
Submitter: ysnysnysn0121
Cache ID: 216::103

Submitinfo

Accepted

Submit #592922: TOTOLINK T10 V2_Firmware V2_V4.1.8cu.5207 Hardcoded root password (by ysnysnysn0121)