CVE-2026-121598

TOTOLINK A950RG Basic Wireless Configuration cstecgi.cgi strcpy stack-based overflow

Published Nov 4, 2026 CVSS 4.0 · 9.4 Critical EPSS < 1% KEV · Not listed
Description
A security vulnerability has been detected in TOTOLINK A950RG 4.1.2cu.5268_B20221104. This impacts the function strcpy of the file /cgi-bin/cstecgi.cgi of the component Basic Wireless Configuration Handler. The manipulation of the argument wepkey leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

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 a950rg
Vendors & Products Totolink a950rg
Type Values Removed Values Added
Description A security vulnerability has been detected in TOTOLINK A950RG 4.1.2cu.5268_B20221104. This impacts the function strcpy of the file /cgi-bin/cstecgi.cgi of the component Basic Wireless Configuration Handler. The manipulation of the argument wepkey leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.
Title TOTOLINK A950RG Basic Wireless Configuration cstecgi.cgi strcpy stack-based overflow
First Time appeared Totolink
Totolink a950rg Firmware
Weaknesses CWE-119
CWE-121
CPEs cpe:2.3:o:totolink:a950rg_firmware:*:*:*:*:*:*:*:*
Vendors & Products Totolink
Totolink a950rg 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': 9.9, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 9.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 9.4, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulDB
Published
Updated
Nov 4, 2026, 6:59 PM
Reserved
Nov 3, 2026, 4:14 PM
Status
Deferred
Published
Nov 4, 2026, 1:17 AM
Modified
Nov 4, 2026, 7:17 PM