CVE-2026-1548

A flaw has been found in Totolink A7000R 4.1cu.4154. This impacts the function CloudACMunualUpdateUserdata of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument url causes command injection. The attack can be initiated remotely. The exploit has been published and may be used.

CVSS v3 6.3 MEDIUM
CVSS v2.0 6.5 MEDIUM

6.3^/10

CVSS v3 : MEDIUM

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

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/02_RCE_CloudACMunualUpdateUserdata_RCE.md	Exploit Third Party Advisory
https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/02_RCE_CloudACMunualUpdateUserdata_RCE.md#poc	Exploit
https://vuldb.com/?ctiid.343232	Permissions Required VDB Entry
https://vuldb.com/?id.343232	Third Party Advisory VDB Entry
https://vuldb.com/?submit.739715	Third Party Advisory VDB Entry
https://www.totolink.net/	Product
https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/02_RCE_CloudACMunualUpdateUserdata_RCE.md	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:totolink:a7000r_firmware:4.1cu.4154:*:*:*:*:*:*:*

cpe:2.3:h:totolink:a7000r:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-01-28 23:15

Updated : 2026-02-09 16:34

NVD link : CVE-2026-1548

Mitre link : CVE-2026-1548

CVE.ORG link : CVE-2026-1548

JSON object : View

Products Affected

totolink

a7000r_firmware
a7000r

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')

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