PT-2025-21824 · Totolink · Totolink N300Rt

Daddyshark · Published 2025-05-18 · Updated 2025-05-24 · CVE-2025-4849

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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

Description: A critical issue affects the function CloudACMunualUpdateUserdata of the file "/cgi-bin/cstecgi.cgi". The manipulation of the url argument leads to command injection. This issue can be exploited remotely.

Recommendations: For TOTOLINK N300RH version 6.1c.1390 B20191101, as a temporary workaround, consider disabling the CloudACMunualUpdateUserdata function until a patch is available. Restrict access to the "/cgi-bin/cstecgi.cgi" file to minimize the risk of exploitation. Avoid using the url 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:2025-05834

CVE-2025-4849

Affected Products

Totolink N300Rt

References · 13

• 🔥 https://github.com/CH13hh/tmp_store_cc/blob/main/tt/ta/m1.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-4849 · Security Note
• https://bdu.fstec.ru/vul/2025-05834 · Security Note
• https://osv.dev/vulnerability/CVE-2025-4849 · Vendor Advisory
• https://twitter.com/SecAideInfo/status/1924771196555690000 · Twitter Post
• https://vuldb.com/?ctiid.309320 · Note
• https://vuldb.com/?submit.575072 · Note
• https://totolink.net · Note
• https://t.me/cvenotify/123516 · Telegram Post
• https://twitter.com/CVEnew/status/1923947752351990087 · Twitter Post
• https://vuldb.com/?id.309320 · Note
• https://t.me/cvetracker/24131 · Telegram Post
• https://t.me/cvenotify/122791 · Telegram Post