PT-2026-5326 · Totolink · Totolink A7000R

Xuanyu · Published 2026-01-29 · Updated 2026-01-29 · CVE-2026-1601

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 A7000R version 4.1cu.4154

Description A flaw exists in the Totolink A7000R router firmware that allows for remote command injection. The issue resides within the setUploadUserData function of the /cgi-bin/cstecgi.cgi file. Manipulation of the FileName argument can trigger the flaw. The exploit for this issue has been publicly released.

Recommendations Update to a newer version that contains a fix for this vulnerability. As a temporary workaround, consider restricting access to the /cgi-bin/cstecgi.cgi file.

Exploit

Fix

Command Injection

Special Elements Injection

Weakness Enumeration

CWE-77

CWE-74

Related Identifiers

CVE-2026-1601

Affected Products

Totolink A7000R

References · 10

• 🔥 https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/03_RCE_setUploadUserData_RCE.md · Exploit
• 🔥 https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/03_RCE_setUploadUserData_RCE.md#poc · Exploit
• https://osv.dev/vulnerability/CVE-2026-1601 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-1601 · Security Note
• https://vuldb.com/?ctiid.343373 · Note
• https://twitter.com/VulmonFeeds/status/2017021850543403225 · Twitter Post
• https://vuldb.com/?submit.740760 · Note
• https://twitter.com/CVEnew/status/2016956591417807234 · Twitter Post
• https://totolink.net · Note
• https://vuldb.com/?id.343373 · Note