CVE-2025-8531

MEDIUM

Mitsubishi Electric MELSEC-Q Series - Buffer Overflow

Title source: llm
STIX 2.1

Description

Improper Handling of Length Parameter Inconsistency vulnerability in Mitsubishi Electric Corporation MELSEC-Q Series Q03UDVCPU, Q04UDVCPU, Q06UDVCPU, Q13UDVCPU, Q26UDVCPU, Q04UDPVCPU, Q06UDPVCPU, Q13UDPVCPU, and Q26UDPVCPU with the first 5 digits of serial No. "24082" to "27081" allows a remote attacker to cause an integer underflow by sending specially crafted packets to the affected product to stop Ethernet communication and the execution of control programs on the product, when the user authentication function is enabled. The user authentication function is enabled by default only when settings are configured by GX Works2, which complies with the Cybersecurity Law of the People's Republic of China, and is normally disabled.

References (3)

Scores

CVSS v3 6.8
EPSS 0.0026
EPSS Percentile 48.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-130
Status published
Products (9)
Mitsubishi Electric Corporation/MELSEC-Q Series Q03UDVCPU The first 5 digits of serial No. "24082" to "27081"
Mitsubishi Electric Corporation/MELSEC-Q Series Q04UDPVCPU The first 5 digits of serial No. "24082" to "27081"
Mitsubishi Electric Corporation/MELSEC-Q Series Q04UDVCPU The first 5 digits of serial No. "24082" to "27081"
Mitsubishi Electric Corporation/MELSEC-Q Series Q06UDPVCPU The first 5 digits of serial No. "24082" to "27081"
Mitsubishi Electric Corporation/MELSEC-Q Series Q06UDVCPU The first 5 digits of serial No. "24082" to "27081"
Mitsubishi Electric Corporation/MELSEC-Q Series Q13UDPVCPU The first 5 digits of serial No. "24082" to "27081"
Mitsubishi Electric Corporation/MELSEC-Q Series Q13UDVCPU The first 5 digits of serial No. "24082" to "27081"
Mitsubishi Electric Corporation/MELSEC-Q Series Q26UDPVCPU The first 5 digits of serial No. "24082" to "27081"
Mitsubishi Electric Corporation/MELSEC-Q Series Q26UDVCPU The first 5 digits of serial No. "24082" to "27081"
Published Sep 19, 2025
Tracked Since Feb 18, 2026