RCE in Siemens Simatic Hmi Mtp1000 Unified Comfort Panel
CVE-2026-27662
Affected devices do not properly restrict access to the web browser via the Control Panel when no corresponding security mechanisms are in place. This could allow an unauthenticated attacker to gain unauthorized access to the web browser, potentially enabling the discovery of backdoors, performing unauthorized actions, or exploiting misconfigurations that may lead to further system compromise.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (5.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 5.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.001
Affected products
- Siemens Simatic Hmi Mtp1000 Unified Comfort Panel — versions 0
- Siemens Simatic Hmi Mtp1000 Unified Comfort Panel Hygienic — versions 0
- Siemens Simatic Hmi Mtp1000 Unified Comfort Panel Hygienic Neutral Design — versions 0
- Siemens Simatic Hmi Mtp1000, Unified Comfort Panel Neutral — versions 0
- Siemens Simatic Hmi Mtp1200 Comfort Pro For Stand (Expandable, Flange At The Bottom) — versions 0
- Siemens Simatic Hmi Mtp1200 Comfort Pro For Support Arm (Expandable, Round Tube) And Extension Unit — versions 0
- Siemens Simatic Hmi Mtp1200 Comfort Pro For Support Arm (Not Extendable, Flange On Top) — versions 0
- Siemens Simatic Hmi Mtp1200 Comfort Pro Neutral Design For Stand (Expandable, Flange At The Bottom) — versions 0
- Siemens Simatic Hmi Mtp1200 Comfort Pro Neutral Design For Support Arm (Expandable, Round Tube) And Extensio — versions 0
- Siemens Simatic Hmi Mtp1200 Comfort Pro Neutral Design For Support Arm (Not Extendable, Flange On Top) — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-27662?
- CVE-2026-27662 is a high-severity vulnerability in Siemens Simatic Hmi Mtp1000 Unified Comfort Panel, classified under Initialization of a Resource with an Insecure Default. CVSS score: 7.7/10. Published 2026-05-12.
- How severe is CVE-2026-27662?
- High severity. CVSS v3 base score is 7.7 out of 10.