Harmony (Formerly Magelis) HMIST6, HMISTM6…: Use of Unmaintained Third Party Components
CVE-2024-11999 is a high-severity use of unmaintained third party components vulnerability in Harmony (Formerly Magelis) HMIST6, HMISTM6, HMIG3U, HMIG3X, HMISTO7 series with EcoStruxure Operator Terminal Expert runtime from Schneider Electric, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. Affected Harmony (Formerly Magelis) HMIST6, HMISTM6, HMIG3U, HMIG3X, HMISTO7 series with EcoStruxure Operator Terminal Expert runtime versions: All versions. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.63% chance of exploitation within 30 days, higher than 51% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Harmony (Formerly Magelis) HMIST6, HMISTM6, HMIG3U, HMIG3X, HMISTO7 series with EcoStruxure Operator Terminal Expert runtime you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Schneider Electric | Harmony (Formerly Magelis) HMIST6, HMISTM6, HMIG3U, HMIG3X, HMISTO7 series with EcoStruxure Operator Terminal Expert runtime | All versions | Not stated |
| Schneider Electric | PFXST6000, PFXSTM6000, PFXSP5000, PFXGP4100 series with Pro-face BLUE runtime | All versions | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (se.com).
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 8.7 | High | CNA (se.com) |
| CVSS 3.1 | 8.8 | High | CNA (se.com) |
Official description
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.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Use of Unmaintained Third Party Components
The product relies on third-party components that are not actively supported or maintained by the original developer or a trusted proxy for the original developer.
More Use of Unmaintained Third Party Components vulnerabilities (CWE-1104)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other references
Recent Use of Unmaintained Third Party Components vulnerabilities
- 9.8 Critical severity
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