How severe is CVE-2024-11999?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Schneider Electric Harmony (Formerly Magelis) Hmist6, Hmistm6, Hmig3u, Hmig3x, Hmisto7 Series With Ecostruxure Operator Terminal Expert Runtime

CVE-2024-11999

CWE-1104: Use of Unmaintained Third-Party Components vulnerability exists that could cause complete control of the device when an authenticated user installs malicious code into HMI product.

Published 2024-12-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (49.3th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: -0.000

Affected products

Schneider Electric Harmony (Formerly Magelis) Hmist6, Hmistm6, Hmig3u, Hmig3x, Hmisto7 Series With Ecostruxure Operator Terminal Expert Runtime — versions All versions
Schneider Electric Pfxst6000, Pfxstm6000, Pfxsp5000, Pfxgp4100 Series With Pro-Face Blue Runtime — versions All versions

Weakness classification (CWE)

CWE-1104

References

download.schneider-electric.com/files

Frequently asked questions

What is CVE-2024-11999?: CVE-2024-11999 is a high-severity vulnerability in Schneider Electric Harmony (Formerly Magelis) Hmist6, Hmistm6, Hmig3u, Hmig3x, Hmisto7 Series With Ecostruxure Operator Terminal Expert Runtime, classified under CWE-1104. CVSS score: 8.8/10. Published 2024-12-17.
How severe is CVE-2024-11999?: High severity. CVSS v3 base score is 8.8 out of 10.