CVE-2025-4043Network attack vector

Persistent code execution via unauthorized rc.local writes

Published May 7, 2025 · Updated May 8, 2025

Improper access control in Milesight UG65 firmware before 60.0.0.46 allows remote authenticated users to modify a boot-time script. The affected administrative interface permits writes to /etc/rc.local, whose contents the device executes during system boot. Administrative credentials and a reboot are required for modified commands to run, enabling persistent system-level code execution.

CVSS severity6.8
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Milesight UG65 firmware before 60.0.0.46 allows remote authenticated users to modify a boot-time script. The affected administrative interface permits writes to /etc/rc.local, whose contents the device executes during system boot. Administrative credentials and a reboot are required for modified commands to run, enabling persistent system-level code execution.

The record

CVE
CVE-2025-4043
Published
May 7, 2025
Updated
May 8, 2025
Vendor
Milesight
Product
UG65
Classifications
CWE-1274, T1037.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 7, 2025CVE publishedPublication date reported by the CVE source.
  2. May 8, 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=0 <60.0.0.46

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Milesight · UG65version=0 <60.0.0.46

Published CVSS scores

6.8ICS-CERTCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N
6.1ICS-CERTCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA: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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1274Improper Access Control for Volatile Memory Containing Boot Code
T1037.004Boot or Logon Initialization Scripts: RC Scripts

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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