PT-2026-5232 · Totolink · Totolink A7000R

Xuanyu · CVE-2026-1547 · Published 2026-01-15 · Updated 2026-02-09

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 A7000R version 4.1cu.4154

Description A flaw exists in the setUnloadUserData function within the /cgi-bin/cstecgi.cgi file of the affected product. Manipulation of the plugin name argument can lead to command injection. This allows for remote attacks. The exploit is publicly available.

Recommendations Apply a software update that addresses the vulnerability in the setUnloadUserData function. As a temporary workaround, restrict access to the /cgi-bin/cstecgi.cgi file. Avoid using the plugin name parameter in the affected file until the issue is resolved.

Exploit

Fix

Command Injection

Special Elements Injection

Weakness Enumeration

CWE-77

CWE-74

Related Identifiers

BDU:2026-00935

CVE-2026-1547

Affected Products

Totolink A7000R

References · 13

• 🔥 https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/01_RCE_setUnloadUserData_RCE.md#poc · Exploit
• 🔥 https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/01_RCE_setUnloadUserData_RCE.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-1547 · Security Note
• https://osv.dev/vulnerability/CVE-2026-1547 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-00935 · Security Note
• https://totolink.net · Note
• https://vuldb.com/?id.343231 · Note
• https://t.me/cveNotify/151443 · Telegram Post
• https://twitter.com/VulmonFeeds/status/2016647916580937793 · Twitter Post
• https://vuldb.com/?submit.739713 · Note
• https://twitter.com/CVEnew/status/2016646184358858947 · Twitter Post
• https://vuldb.com/?ctiid.343231 · Note
• https://t.me/CVEtracker/43203 · Telegram Post