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CVE-2026-121598

9.9, critical

TOTOLINK A950RG Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
9.9, critical critical CVSS v3.1
EPSS, next 30 days
n/a
Exploitation
No public evidence
Published
4 Nov 2026today

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.

Details

Vendor
TOTOLINK
Product
A950RG
Weakness
CWE-119 (opens in a new tab)
Status
Deferred
Updated
4 Nov 2026
Assigner
cna@vuldb.com

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References 6

Other references 6

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other TOTOLINK CVEs

Every TOTOLINK CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-121597 TOTOLINK A950RG Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability 9.9, critical
  • CVE-2026-121599 TOTOLINK A950RG Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability 9.9, critical
  • CVE-2026-121600 TOTOLINK A950RG Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability 9.9, critical
  • CVE-2026-116504 TOTOLINK A950RG Injection Vulnerability EPSS 2% 9.9, critical
  • CVE-2026-116505 TOTOLINK A950RG Injection Vulnerability EPSS 3% 9.1, critical
  • CVE-2026-116506 TOTOLINK A950RG Injection Vulnerability EPSS 2% 9.9, critical
  • CVE-2026-116508 TOTOLINK A950RG Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability EPSS 0.6% 10, critical
  • CVE-2026-114575 TOTOLINK A950RG Injection Vulnerability EPSS 2% 10, critical

Beyond this page

Is CVE-2026-121598 in your network?

This page tells you how dangerous CVE-2026-121598 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 4 Nov 2026, not the live upstream state.