CVE-2025-10259

Denial-of-Service(DoS) Vulnerability in TCP Communication Function on MELSEC iQ-F Series CPU module

MEDIUM
5.3
CVSS Score
Published: November 6, 2025 at 07:12 AM UTC
Updated: June 17, 2026 at 08:28 AM UTC
83 products affected across 1 vendorMELSEC iQ-F FX5UC-96MT/DMELSEC iQ-F FX5U-64MR/ESMELSEC iQ-F FX5U-32MT/DSS

Using MELSEC iQ-F Series FX5U-32MT/ES by Mitsubishi Electric Corporation?

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

Improper Validation of Specified Quantity in Input vulnerability in TCP Communication Function on Mitsubishi Electric Corporation MELSEC iQ-F Series CPU module allows a remote attacker to disconnect the connection by sending specially crafted TCP packets to cause a denial-of-service (DoS) condition on the products. There is no impact on connections other than the attacked one.

Affected

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMMitsubishi
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-1284

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