CVE-2026-1623

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-1623
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.

6.3 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

6.5 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:L/Au:S/C:P/I:P/A:P

Exploitability : 8.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References
Link Resource
https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/04_RCE_setUpgradeFW_RCE.md Exploit Third Party Advisory
https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/04_RCE_setUpgradeFW_RCE.md#poc Exploit
https://vuldb.com/?ctiid.343382 Permissions Required VDB Entry
https://vuldb.com/?id.343382 Third Party Advisory VDB Entry
https://vuldb.com/?submit.740767 Third Party Advisory VDB Entry
https://www.totolink.net/ Product
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:totolink:a7000r_firmware:4.1cu.4154:*:*:*:*:*:*:*
cpe:2.3:h:totolink:a7000r:-:*:*:*:*:*:*:*
History

10 Feb 2026, 14:44

Type Values Removed Values Added
CPE cpe:2.3:h:totolink:a7000r:-:*:*:*:*:*:*:*
cpe:2.3:o:totolink:a7000r_firmware:4.1cu.4154:*:*:*:*:*:*:*
First Time Totolink a7000r Firmware
Totolink a7000r
Totolink
References () https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/04_RCE_setUpgradeFW_RCE.md - () https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/04_RCE_setUpgradeFW_RCE.md - Exploit, Third Party Advisory
References () https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/04_RCE_setUpgradeFW_RCE.md#poc - () https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/04_RCE_setUpgradeFW_RCE.md#poc - Exploit
References () https://vuldb.com/?ctiid.343382 - () https://vuldb.com/?ctiid.343382 - Permissions Required, VDB Entry
References () https://vuldb.com/?id.343382 - () https://vuldb.com/?id.343382 - Third Party Advisory, VDB Entry
References () https://vuldb.com/?submit.740767 - () https://vuldb.com/?submit.740767 - Third Party Advisory, VDB Entry
References () https://www.totolink.net/ - () https://www.totolink.net/ - Product

29 Jan 2026, 21:15

Type Values Removed Values Added
New CVE
Information

Published : 2026-01-29 21:15

Updated : 2026-02-10 14:44

NVD link : CVE-2026-1623

Mitre link : CVE-2026-1623

CVE.ORG link : CVE-2026-1623

JSON object : View

Products Affected

totolink

  • a7000r
  • a7000r_firmware
CWE
CWE-74

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CWE-77

Improper Neutralization of Special Elements used in a Command ('Command Injection')