CVE-2025-4270Public exploitNetwork attack vector

Unauthenticated configuration disclosure via topicurl actions

Published May 5, 2025 · Updated May 5, 2025

Information disclosure in TOTOLINK A720R 4.1.5cu.374 allows remote attackers to read device configuration through a crafted POST request. The /cgi-bin/cstecgi.cgi handler accepts getInitCfg or getSysStatusCfg in topicurl without authentication and returns firmware, model, network, MAC, and Wi-Fi credential data. No credentials or user interaction are required; successful requests expose configuration and wireless credentials without altering the router.

CVSS severity5.3
Medium
EPSS probability13.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in TOTOLINK A720R 4.1.5cu.374 allows remote attackers to read device configuration through a crafted POST request. The /cgi-bin/cstecgi.cgi handler accepts getInitCfg or getSysStatusCfg in topicurl without authentication and returns firmware, model, network, MAC, and Wi-Fi credential data. No credentials or user interaction are required; successful requests expose configuration and wireless credentials without altering the router.

The record

CVE
CVE-2025-4270
Published
May 5, 2025
Updated
May 5, 2025
Vendor
TOTOLINK
Product
A720R
Classifications
CWE-284, CWE-200, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 5, 2025CVE publishedPublication date reported by the CVE source.
  2. May 5, 2025Record 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=4.1.5cu.374

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TOTOLINK · A720Rversion=4.1.5cu.374

Published CVSS scores

5.0VulDB CNAAV:N/AC:L/Au:N/C:P/I:N/A:N
5.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1190Exploit Public-Facing Application

Public exploit references

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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