CVE-2025-10259

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

5.3 Medium

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: Low

Exploit likelihood

0.45%Up 0.4 points since Nov 6, 2025

What each source reports

CVE List Score used 5.3

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

Record: CVE-2025-10259
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness: CWE-1284
Updated: 2026-11-02

EUVDEUVD-2025-37980 5.3

Record: EUVD-2025-37980
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Updated: 2026-11-02

GitHub AdvisoriesGHSA-8pxf-65qh-4qrc 5.3

Improper Validation of Specified Quantity in Input vulnerability in TCP Communication Function on...

Record: GHSA-8pxf-65qh-4qrc
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness: CWE-1284
Updated: 2026-11-02

NVD 5.3

Record: CVE-2025-10259
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness: CWE-1284
Updated: 2026-11-02

Affected products

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History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-10259 is a medium vulnerability (CVSS 5.3) in Mitsubishi Electric Corporation Melsec Iq-f Series Fx5s-30mr/ds, published November 6, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.45%, the 39th percentile. No source names a fixed version.