CVE-2025-4268Public exploitNetwork attack vector

Unauthenticated reboot via RebootSystem request

Published May 5, 2025 · Updated May 5, 2025

Missing authentication in cstecgi.cgi in TOTOLINK A720R 4.1.5cu.374 allows remote attackers to reboot the router via a crafted request. The CGI handler accepts a POST body setting topicurl to RebootSystem and invokes the reboot operation without requiring authentication. Network reachability to the management interface is sufficient, and successful exploitation interrupts routing while the device restarts.

CVSS severity6.9
Medium
EPSS probability1.05%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in cstecgi.cgi in TOTOLINK A720R 4.1.5cu.374 allows remote attackers to reboot the router via a crafted request. The CGI handler accepts a POST body setting topicurl to RebootSystem and invokes the reboot operation without requiring authentication. Network reachability to the management interface is sufficient, and successful exploitation interrupts routing while the device restarts.

The record

CVE
CVE-2025-4268
Published
May 5, 2025
Updated
May 5, 2025
Vendor
TOTOLINK
Product
A720R
Classifications
CWE-287, CWE-306, T1499.004
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

5.0VulDBAV:N/AC:L/Au:N/C:N/I:N/A:P
6.9VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
5.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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 exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
CWE-306Missing Authentication for Critical Function
T1499.004Application or System Exploitation

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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