CVE-2025-7524Public exploitNetwork attack vector

Authenticated command execution via newline filter bypass

Published Jul 13, 2025 · Updated Jul 15, 2025

Command injection in the HTTP POST handler in TOTOLINK T6 4.1.5cu.748_B20211015 allows remote authenticated users to execute commands. The setDiagnosisCfg function passes the ip parameter to a system command after Validity_check applies a blacklist that newline characters bypass. Low-privilege access to the router interface is required, and successful requests execute attacker-supplied commands with the web service's device privileges.

CVSS severity8.8
High
EPSS probability2.83%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in the HTTP POST handler in TOTOLINK T6 4.1.5cu.748_B20211015 allows remote authenticated users to execute commands. The setDiagnosisCfg function passes the ip parameter to a system command after Validity_check applies a blacklist that newline characters bypass. Low-privilege access to the router interface is required, and successful requests execute attacker-supplied commands with the web service's device privileges.

The record

CVE
CVE-2025-7524
Published
Jul 13, 2025
Updated
Jul 15, 2025
Vendor
TOTOLINK
Product
T6
Classifications
CWE-77, CWE-74, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 13, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 15, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=4.1.5cu.748_B20211015

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

TOTOLINK · T6version=4.1.5cu.748_B20211015

Published CVSS scores

6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
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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