CVE-2025-51986 — HIGH (7.5)

Vulnerability Description

An issue was discovered in the demo/LINUXTCP implementation of cwalter-at freemodbus v.2018-09-12 allowing attackers to reach an infinite loop via a crafted length value for a packet.

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Related Weaknesses (CWE)

CWE-835

References

https://gist.github.com/jyjsunny/a9743a718ed3081b034c11201803f6b4

FAQ

What is CVE-2025-51986?

CVE-2025-51986 is a vulnerability with a CVSS score of 7.5 (HIGH). An issue was discovered in the demo/LINUXTCP implementation of cwalter-at freemodbus v.2018-09-12 allowing attackers to reach an infinite loop via a crafted length value for a packet.

How severe is CVE-2025-51986?

CVE-2025-51986 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-51986?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.