Milesight UG65-868M-EA Improper Access Control for Volatile Memory Containing Boot Code

published 2025-05-07 18 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-13931

cvss: 6.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 29%
public exploits: 0; none known

An admin user can gain unauthorized write access to the /etc/rc.local file on the device, which is executed on a system boot.

Patch / fix

fixed in 1

Milesight UG65-868M-EA 60.0.0.46

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-25-126-02 updated 2025-05-06 cvss 6.8

Milesight UG65-868M-EA

Milesight UG65-868M-EA <Firmware_60.0.0.46
affected: mitigation “Milesight released the latest firmware Version 60.0.0.46 for the UG65 gateway. Users can download the latest firmware from the Milesight download center.” milesight.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 18 mo ago (2025-05-08)

Exploit prediction

0.35% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.8	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N
CNA	4.0	6.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N
CNA	4.0	6.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

Milesight UG65-868M-EA

Classification

Weakness

CWE-1274 Improper Access Control for Volatile Memory Containing Boot Code

References

cisa.gov /news-events/ics-advisories/icsa-25-126-02
third-party-advisory, us-government-resource
milesight.com /iot/resources/download-center/#firmware-ug65
release-notes

Sources

CVE List CVE-2025-4043
NVD CVE-2025-4043

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary