CVE-2019-10977

Name: CVE-2019-10977
Creator: NVD / NIST
Published: 2019-05-23T14:29:07.61+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 3.54%

Last modified Jun 17, 2026

CVE-2019-10977 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. In Mitsubishi Electric MELSEC-Q series Ethernet module QJ71E71-100 serial number 20121 and prior, an attacker could send crafted TCP packets against the FTP service, forcing the target devices to enter an error mode and cause a denial-of-service condition.. EPSS estimates a 3.54% chance of exploitation in the next 30 days.

Description

In Mitsubishi Electric MELSEC-Q series Ethernet module QJ71E71-100 serial number 20121 and prior, an attacker could send crafted TCP packets against the FTP service, forcing the target devices to enter an error mode and cause a denial-of-service condition.

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

3.54%

87.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mitsubishielectric	Qj71e71-100 Firmware	<= 20121

References

http://www.securityfocus.com/bid/108419Third Party Advisory, VDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-19-141-02Third Party Advisory, US Government Resource
http://www.securityfocus.com/bid/108419Third Party Advisory, VDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-19-141-02Third Party Advisory, US Government Resource

Timeline

Published: May 23, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-10977?

How severe is CVE-2019-10977?

CVE-2019-10977 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.54% probability of exploitation in the next 30 days.

How do I fix CVE-2019-10977?

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-2019-10977?

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

Scan your code now

Source: NVD / NIST