Vulnerability · Published Jun 16, 2025 · Assigned by VulDB

CVE-2025-6139TOTOLINK T10 shadow.sample hard-coded password

Low 3.9

In plain English

A low-severity security flaw in T10 from TOTOLINK. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities).

Severity (CVSS 3.1)3.9Low

Exploit odds (30 days)0.4%top 65.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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 leads to use of hard-coded password. The attack can only be initiated within the local network. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used.

Affected products (as reported)

Vendor	Product	Versions
TOTOLINK	T10	4.1.8cu.5207

Weakness: CWE-259, CWE-255 · Vector: CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References

VDB-312608 | TOTOLINK T10 shadow.sample hard-coded password vdb-entry
VDB-312608 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #592922 | TOTOLINK T10 V2_Firmware V2_V4.1.8cu.5207 Hardcoded root password third-party-advisory
https://candle-throne-f75.notion.site/TOTOLINK-T10-shadow-20ddf0aa118580f5a455cd5dbc521472 exploit
https://www.totolink.net/ product