CVE-2023-43141Network attack vector

Unauthenticated router compromise via undisclosed access control

Published Sep 25, 2023 · Updated Jul 9, 2026

Incorrect access control in TOTOLINK A3700R 9.1.2u.6134_B20201202 and N600R 5.3c.5137 allows remote attackers to compromise the routers. The public CVE record and its now-broken technical reference do not disclose the affected endpoint, authorization check, or request that bypasses access control. Network access requires no authentication or user interaction, but the available evidence does not identify the exposed data or administrative action.

CVSS severity9.8
Critical
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect access control in TOTOLINK A3700R 9.1.2u.6134_B20201202 and N600R 5.3c.5137 allows remote attackers to compromise the routers. The public CVE record and its now-broken technical reference do not disclose the affected endpoint, authorization check, or request that bypasses access control. Network access requires no authentication or user interaction, but the available evidence does not identify the exposed data or administrative action.

The record

CVE
CVE-2023-43141
Published
Sep 25, 2023
Updated
Jul 9, 2026
Vendor
TOTOLINK
Product
N600R
Classifications
CWE-284
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 25, 2023CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=v5.3c.5137

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TOTOLINK · N600Rversion=v5.3c.5137
TOTOLINK · A3700Rversion=v9.1.2u.6134_b20201202

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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