Home / Items
Industrial control advisoryKnown exploitedSeverity 7.8 highExploit likelihood 98%
Siemens SIPLUS and SIMATIC Products
ICSA-26-265-04 · CISA · September 8, 2026
Summary
Multiple Siemens products are vulnerable to the "Copy Fail" vulnerability.
Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends specific countermeasures for products where fixes are not, or not yet available.
From CISA, quoted as published. Check the source before acting.
What to do
Limit access to the interactive shell of the additional GNU/Linux subsystem to trusted personnel only.
Only build and run applications from trusted sources.
Currently no fix is available
Update to V21 Update 2 SR1 or later version
Update to V21 SP2 Update 1 or later version
TODO: download link missing
Update to V6.0 or later version
Vendor fix or mitigation, quoted from the advisory.
Each CVE in this advisory
| CVE | Severity | Known exploited | Exploit likelihood |
|---|---|---|---|
| CVE-2026-31431 | 7.8 high | Exploited | 98.1% |
Severity from the advisory (CVSS), known exploitation from CISA's catalog, exploit likelihood from EPSS (next 30 days).
Affected products
| Vendor | Product |
|---|---|
| Siemens | SIMATIC AX Runtime Core Linux Common Debian |
| Siemens | SIMATIC AX Runtime Core Linux Common Debian arm64 |
| Siemens | SIMATIC AX Runtime Core Linux Platform Container Common Debian Development |
| Siemens | SIMATIC AX Runtime Core Linux VMWare Development |
| Siemens | SIMATIC CN 4100 |
| Siemens | SIMATIC HMI MTP1000 Unified Basic (6AV2123-3KB32-0AW0) |
| Siemens | SIMATIC HMI MTP1000 Unified Comfort Panel (6AV2128-3KB06-0AX1) |
| Siemens | SIMATIC HMI MTP1000 Unified Comfort Panel hygienic (6AV2128-3KB40-0AX0) |
| Siemens | SIMATIC HMI MTP1000 Unified Comfort Panel hygienic neutral design (6AV2128-3KB70-0AX0) |
| Siemens | SIMATIC HMI MTP1000, Unified Comfort Panel neutral (6AV2128-3KB36-0AX1) |
| Siemens | SIMATIC HMI MTP1200 Comfort Pro for stand (expandable, flange at the bottom) (6AV2128-3MB27-1BX0) |
| Siemens | SIMATIC HMI MTP1200 Comfort Pro for support arm (expandable, round tube) and extension unit (6AV2128-3MB27-0BX0) |
| Siemens | SIMATIC HMI MTP1200 Comfort Pro for support arm (not extendable, flange on top) (6AV2128-3MB27-0AX0) |
| Siemens | SIMATIC HMI MTP1200 Comfort Pro neutral design for stand (expandable, flange at the bottom) (6AV2128-3MB57-1BX0) |
| Siemens | SIMATIC HMI MTP1200 Comfort Pro neutral design for support arm (expandable, round tube) and extension (6AV2128-3MB57-0BX0) |
| Siemens | SIMATIC HMI MTP1200 Comfort Pro neutral design for support arm (not extendable, flange on top) (6AV2128-3MB57-0AX0) |
| Siemens | SIMATIC HMI MTP1200 Unified Basic (6AV2123-3MB32-0AW0) |
| Siemens | SIMATIC HMI MTP1200 Unified Comfort Panel (6AV2128-3MB06-0AX1) |
| Siemens | SIMATIC HMI MTP1200 Unified Comfort Panel hygienic (6AV2128-3MB40-0AX0) |
| Siemens | SIMATIC HMI MTP1200 Unified Comfort Panel hygienic neutral design (6AV2128-3MB70-0AX0) |
| Siemens | SIMATIC HMI MTP1200 Unified Comfort Panel neutral design (6AV2128-3MB36-0AX1) |
| Siemens | SIMATIC HMI MTP1500 Comfort Pro for stand (expandable, flange at the bottom) (6AV2128-3QB27-1BX0) |
| Siemens | SIMATIC HMI MTP1500 Comfort Pro for support arm (expandable, round tube) and extension unit (6AV2128-3QB27-0BX0) |
| Siemens | SIMATIC HMI MTP1500 Comfort Pro for support arm (not extendable, flange on top) (6AV2128-3QB27-0AX0) |
| Siemens | SIMATIC HMI MTP1500 Comfort Pro neutral design for stand (expandable, flange at the bottom) (6AV2128-3QB57-1BX0) |
| Siemens | SIMATIC HMI MTP1500 Comfort Pro neutral design for support arm (expandable, round tube) and extension (6AV2128-3QB57-0BX0) |
| Siemens | SIMATIC HMI MTP1500 Comfort Pro neutral design for support arm (not extendable, flange on top) (6AV2128-3QB57-0AX0) |
| Siemens | SIMATIC HMI MTP1500 Unified Comfort Panel (6AV2128-3QB06-0AX1) |
| Siemens | SIMATIC HMI MTP1500 Unified Comfort Panel hygienic (6AV2128-3QB40-0AX0) |
| Siemens | SIMATIC HMI MTP1500 Unified Comfort Panel hygienic neutral design (6AV2128-3QB70-0AX0) |
| Siemens | SIMATIC HMI MTP1500 Unified Comfort Panel neutral design (6AV2128-3QB36-0AX1) |
| Siemens | SIMATIC HMI MTP1900 Comfort Pro for stand (expandable, flange at the bottom) (6AV2128-3UB27-1BX0) |
| Siemens | SIMATIC HMI MTP1900 Comfort Pro for support arm (expandable, round tube) and extension unit (6AV2128-3UB27-0BX0) |
| Siemens | SIMATIC HMI MTP1900 Comfort Pro for support arm (not extendable, flange on top) (6AV2128-3UB27-0AX0) |
| Siemens | SIMATIC HMI MTP1900 Comfort Pro neutral design for stand (expandable, flange at the bottom) (6AV2128-3UB57-1BX0) |
| Siemens | SIMATIC HMI MTP1900 Comfort Pro neutral design for support arm (expandable, round tube) and extension (6AV2128-3UB57-0BX0) |
| Siemens | SIMATIC HMI MTP1900 Comfort Pro neutral design for support arm (not extendable, flange on top) (6AV2128-3UB57-0AX0) |
| Siemens | SIMATIC HMI MTP1900 Unified Comfort Panel (6AV2128-3UB06-0AX1) |
| Siemens | SIMATIC HMI MTP1900 Unified Comfort Panel hygienic (6AV2128-3UB40-0AX0) |
| Siemens | SIMATIC HMI MTP1900 Unified Comfort Panel hygienic neutral design (6AV2128-3UB70-0AX0) |
27 more in the source.
Why it's on these mode pages
- Maritime: Vendor table: Siemens (industrial control makers used in every mode, all modes) (matched by rule)
- Pipeline: Vendor table: Siemens (industrial control makers used in every mode, all modes) (matched by rule)
- Freight rail: Vendor table: Siemens (industrial control makers used in every mode, all modes) (matched by rule)
- Passenger rail and transit: Vendor table: Siemens (industrial control makers used in every mode, all modes) (matched by rule)
- Highway and motor carrier: Vendor table: Siemens (industrial control makers used in every mode, all modes) (matched by rule)
- Postal and parcel: Vendor table: Siemens (industrial control makers used in every mode, all modes) (matched by rule)
Change history
- September 8, 2026: Publication Date
- September 22, 2026: Initial CISA Republication of Siemens ProductCERT SSA-328642 advisory
- November 9, 2026: First collected by Watch
Securidigm Scout can match advisories like this one to the equipment on your own network, offline. securidigm.com