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CVE-2026-121597

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 weakness has been identified in TOTOLINK A950RG 4.1.2cu.5268_B20221104. This affects the function setAppEasyWizardConfig of the file /cgi-bin/cstecgi.cgi of the component Easy Setup Wizard Handler. Executing a manipulation of the argument functionType can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks.

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-2026-121598 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-2026-121597 in your network?

This page tells you how dangerous CVE-2026-121597 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.

  • EXYS7600 OCELOT

    Find it before attackers do

    Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2026-121597 comes with the devices to patch.

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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.