CVE-2026-79911

TOTOLINK N600R CGI cstecgi.cgi setSystemConfig stack-based overflow

Published Aug 25, 2026 CVSS 4.0 · 10 Critical EPSS 1.1% KEV · Not listed
Description
A security vulnerability has been detected in TOTOLINK N600R 4.3.0cu.7647_B20210106. The affected element is the function setSystemConfig of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument Hostname leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed publicly 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': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Totolink n600r
Vendors & Products Totolink n600r
Type Values Removed Values Added
Description A security vulnerability has been detected in TOTOLINK N600R 4.3.0cu.7647_B20210106. The affected element is the function setSystemConfig of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument Hostname leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used.
Title TOTOLINK N600R CGI cstecgi.cgi setSystemConfig stack-based overflow
First Time appeared Totolink
Totolink n600r Firmware
Weaknesses CWE-119
CWE-121
CPEs cpe:2.3:o:totolink:n600r_firmware:*:*:*:*:*:*:*:*
Vendors & Products Totolink
Totolink n600r Firmware
References
Metrics cvssV2_0

{'score': 10, 'vector': 'AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 10, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 10, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 10, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulDB
Published
Updated
Aug 27, 2026, 2:34 PM
Reserved
Aug 25, 2026, 2:57 PM
Status
Deferred
Published
Aug 25, 2026, 11:17 PM
Modified
Aug 27, 2026, 5:20 PM