CVE-2026-51539

7.5 highEPSS 0.5%

High (7.5). EPSS 0.5% chance of exploitation in the next 30 days.

A Denial of Service (DoS) vulnerability exists in the receive loop of libmodbus 3.1.12 when running on Windows. The issue stems from improper timeout management during network read operations.

Severity

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 42% of CVEs (scores of 2026-10-31)
CWE: CWE-400
Published: 2026-07-13
Modified: 2026-07-15
Record from: the NVD, synced 2026-10-19

References

https://gist.github.com/MrAlaskan/f22dcf01a5dd90da1b191fcee9043a32
https://github.com/stephane/libmodbus/issues/843

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