CVE-2026-1623 — MEDIUM (6.3)

Vulnerability Description

A weakness has been identified in Totolink A7000R 4.1cu.4154. Impacted is the function setUpgradeFW of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument FileName causes command injection. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.

CVSS Score

6.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

LOW

Affected Products

Vendor	Product	Versions
Totolink	A7000R Firmware	4.1cu.4154
Totolink	A7000R	-

Related Weaknesses (CWE)

CWE-74 CWE-77

References

https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/04_RCE_setUpgradeFW_ExploitThird Party Advisory
https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/04_RCE_setUpgradeFW_Exploit
https://vuldb.com/?ctiid.343382Permissions RequiredVDB Entry
https://vuldb.com/?id.343382Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.740767Third Party AdvisoryVDB Entry
https://www.totolink.net/Product

FAQ

What is CVE-2026-1623?

CVE-2026-1623 is a vulnerability with a CVSS score of 6.3 (MEDIUM). A weakness has been identified in Totolink A7000R 4.1cu.4154. Impacted is the function setUpgradeFW of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument FileName causes command injectio...

How severe is CVE-2026-1623?

CVE-2026-1623 has been rated MEDIUM with a CVSS base score of 6.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-1623?

Check the references section above for vendor advisories and patch information. Affected products include: Totolink A7000R Firmware, Totolink A7000R.