CVE-2026-7548

Totolink NR1800X cstecgi.cgi sub_41A68C command injection

Published May 1, 2026 CVSS 4.0 · 8.7 High EPSS 1.5% KEV · Not listed
Description
A vulnerability was detected in Totolink NR1800X 9.1.0u.6279_B20210910. This affects the function sub_41A68C of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument setUssd results in command injection. The attack is possible to be carried out remotely. The exploit is now public and may be used.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Totolink nr1800x
Vendors & Products Totolink nr1800x
Type Values Removed Values Added
Description A vulnerability was detected in Totolink NR1800X 9.1.0u.6279_B20210910. This affects the function sub_41A68C of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument setUssd results in command injection. The attack is possible to be carried out remotely. The exploit is now public and may be used.
Title Totolink NR1800X cstecgi.cgi sub_41A68C command injection
First Time appeared Totolink
Totolink nr1800x Firmware
Weaknesses CWE-74
CWE-77
CPEs cpe:2.3:o:totolink:nr1800x_firmware:*:*:*:*:*:*:*:*
Vendors & Products Totolink
Totolink nr1800x Firmware
References
Metrics cvssV2_0

{'score': 9, 'vector': 'AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 8.8, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulDB
Published
Updated
May 1, 2026, 2:08 PM
Reserved
Apr 30, 2026, 7:01 PM
Status
Deferred
Published
May 1, 2026, 3:16 AM
Modified
Oct 26, 2026, 9:10 PM