CVE-2025-8531
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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 6.8
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
- EPSS probability
- 1.02%
- CWE
- CWE-130
- Published
- 2025-09-19
- Last modified
- 2026-03-12
Affected products
- Mitsubishi Electric Corporation MELSEC-Q Series Q03UDVCPU
- Mitsubishi Electric Corporation MELSEC-Q Series Q04UDVCPU
- Mitsubishi Electric Corporation MELSEC-Q Series Q06UDVCPU
- Mitsubishi Electric Corporation MELSEC-Q Series Q13UDVCPU
- Mitsubishi Electric Corporation MELSEC-Q Series Q26UDVCPU
- Mitsubishi Electric Corporation MELSEC-Q Series Q04UDPVCPU
- Mitsubishi Electric Corporation MELSEC-Q Series Q06UDPVCPU
- Mitsubishi Electric Corporation MELSEC-Q Series Q13UDPVCPU
Weakness type
Related vulnerabilities
- CVE-2026-71337 — Windows Storage Management Provider Elevation of Privilege Vulnerability
- CVE-2026-5706 — Buffer overflow in Bluetooth Mesh SDK when handling extended advertisements
- CVE-2026-71402 — wicked: out-of-bounds read in the DHCPv4 option parser due to payload length taken from the IP total length
- CVE-2026-81575 — Missing Sanity Checks for Buffer Lengths
- CVE-2026-58097 — ppp(8): missing length validation in mp_SetEnddisc()
- CVE-2026-58096 — ppp(8): missing length validation in LcpDecodeConfig()
- CVE-2026-14587 — Unathenticated connection can hold Bolt channel open
- CVE-2026-67292 — FreeRDP before 3.29.0 WebSocket Ping Buffer Over-disclosure