Connection interruption via unvalidated TCP quantity
Published Nov 6, 2025 · Updated Nov 6, 2025
Improper input validation in all Mitsubishi Electric MELSEC iQ-F Series CPU module versions allows remote attackers to disconnect TCP connections. The TCP communication function fails to validate a quantity specified in a specially crafted TCP packet and terminates the targeted connection. No authentication or user interaction is required, and other connections remain available while the attacked connection must be re-established.
Summary
What happened
Improper input validation in all Mitsubishi Electric MELSEC iQ-F Series CPU module versions allows remote attackers to disconnect TCP connections. The TCP communication function fails to validate a quantity specified in a specially crafted TCP packet and terminates the targeted connection. No authentication or user interaction is required, and other connections remain available while the attacked connection must be re-established.
The record
- CVE
- CVE-2025-10259
- Published
- Nov 6, 2025
- Updated
- Nov 6, 2025
- Vendor
- Mitsubishi Electric Corporation
- Product
- MELSEC iQ-F Series FX5S-30MR/DS
- Classifications
- CWE-1284, T0814
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 6, 2025CVE publishedPublication date reported by the CVE source.
- Nov 6, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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- Affected versionversion=All versions
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What is affected?
Published CVSS scores
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Attacks
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Weakness, pattern, technique
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Technologies
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Your stack
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