PT-2025-33355 · Unknown · Freemodbus

Jyjsunny · Published 2025-08-14 · Updated 2025-08-16 · CVE-2025-51986

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: freemodbus version 2018-09-12

Description: An issue was discovered in the demo/LINUXTCP implementation of freemodbus, allowing attackers to reach an infinite loop via a crafted length value for a packet.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Infinite Loop

Weakness Enumeration

CWE-835

Related Identifiers

CVE-2025-51986

Affected Products

Freemodbus

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2025-51986 · Security Note
• https://gist.github.com/jyjsunny/a9743a718ed3081b034c11201803f6b4 · Note
• https://t.me/cveNotify/132318 · Telegram Post
• https://twitter.com/CVEnew/status/1956654835094393142 · Twitter Post
• https://t.me/CVEtracker/30027 · Telegram Post