PT-2025-21825 · Totolink · Totolink N300Rt

Daddyshark · Published 2025-05-18 · Updated 2025-05-20 · CVE-2025-4850

Positive Technologies (AI Summary)

CVSS v2.0

6.5

Medium

Base vector

AV:N/AC:L/Au:S/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions TOTOLINK N300RH version 6.1c.1390 B20191101

Description A critical vulnerability has been found in the TOTOLINK N300RH router. This issue affects the setUnloadUserData function of the /cgi-bin/cstecgi.cgi file. The manipulation of the plugin name argument leads to command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Recommendations As a temporary workaround, consider disabling the setUnloadUserData function until a patch is available. Restrict access to the /cgi-bin/cstecgi.cgi file to minimize the risk of exploitation. Avoid using the plugin name argument in the affected API endpoint until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Special Elements Injection

Command Injection

Weakness Enumeration

CWE-74

CWE-77

Related Identifiers

BDU:2025-05833

CVE-2025-4850

Affected Products

Totolink N300Rt

References · 13

• 🔥 https://github.com/CH13hh/tmp_store_cc/blob/main/tt/ta/m2.md · Exploit
• https://osv.dev/vulnerability/CVE-2025-4850 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-05833 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-4850 · Security Note
• https://t.me/cvenotify/122792 · Telegram Post
• https://vuldb.com/?submit.575073 · Note
• https://twitter.com/CVEnew/status/1923947751454409003 · Twitter Post
• https://totolink.net · Note
• https://twitter.com/VulmonFeeds/status/1923949822232383492 · Twitter Post
• https://vuldb.com/?id.309321 · Note
• https://vuldb.com/?ctiid.309321 · Note
• https://t.me/cvetracker/24132 · Telegram Post
• https://twitter.com/SecAideInfo/status/1924771184916496755 · Twitter Post