PT-2026-5348 · Totolink · Totolink A7000R

Xuanyu · Published 2026-01-29 · Updated 2026-02-10 · CVE-2026-1623

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 device. The setUpgradeFW function within the /cgi-bin/cstecgi.cgi file is susceptible to command injection through manipulation of the FileName argument. This issue can be exploited remotely. The exploit code has been publicly released, potentially increasing the risk of attacks.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Command Injection

Special Elements Injection

Weakness Enumeration

CWE-77

CWE-74

Related Identifiers

CVE-2026-1623

Affected Products

Totolink A7000R

References · 11

• 🔥 https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/04_RCE_setUpgradeFW_RCE.md · Exploit
• 🔥 https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/04_RCE_setUpgradeFW_RCE.md#poc · Exploit
• https://osv.dev/vulnerability/CVE-2026-1623 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-1623 · Security Note
• https://t.me/cveNotify/151563 · Telegram Post
• https://vuldb.com/?ctiid.343382 · Note
• https://twitter.com/VulmonFeeds/status/2017103769536712809 · Twitter Post
• https://vuldb.com/?submit.740767 · Note
• https://twitter.com/CVEnew/status/2016978390285173240 · Twitter Post
• https://totolink.net · Note
• https://vuldb.com/?id.343382 · Note