CVE-2024-8403

Name: CVE-2024-8403
Creator: NVD / NIST
Published: 2024-11-19T06:15:17.873+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.66%

Last modified Jun 17, 2026

CVE-2024-8403 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Improper Validation of Specified Type of Input vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series FX5-ENET versions 1.100 to 1.200 and FX5-ENET/IP versions 1.100 to 1.104 allows a remote attacker to cause a Denial of Service condition in Ethernet communication of the products by sending specially crafted SLMP packets.. EPSS estimates a 0.66% chance of exploitation in the next 30 days.

Description

Improper Validation of Specified Type of Input vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series FX5-ENET versions 1.100 to 1.200 and FX5-ENET/IP versions 1.100 to 1.104 allows a remote attacker to cause a Denial of Service condition in Ethernet communication of the products by sending specially crafted SLMP packets.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.66%

46.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1287

References

Timeline

Published: Nov 19, 2024
Last Modified: Jun 17, 2026
Status: Deferred

Frequently Asked Questions

What is CVE-2024-8403?

How severe is CVE-2024-8403?

CVE-2024-8403 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.66% probability of exploitation in the next 30 days.

How do I fix CVE-2024-8403?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-8403?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST