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Industrial control advisorySeverity 8.2 high

Siemens APOGEE, TALON and Desigo PXC/PXM Products

ICSA-26-295-08 · CISA · October 13, 2026

Summary

The products listed below contain multiple vulnerabilities that could allow an attacker to cause a denial of service and potentially impact the availability of the affected device. Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens recommends specific mitigations for products where fixes are not or not yet available.

From CISA, quoted as published. Check the source before acting.

What to do

 CVE-2026-89208 - Apply network segmentation and put the controllers behind properly configured gateways/firewalls. Currently no fix is planned Disable the FTP/Web service (Note that the FTP/Web service is disabled by default on APOGEE, Desigo, and TALON products.) Update to V2.8.21 or later version Update to V3.5.7 or later version

Vendor fix or mitigation, quoted from the advisory.

Each CVE in this advisory

CVESeverityKnown exploitedExploit likelihoodWeakness
CVE-2026-892085.3 mediumNo0.3%Out-of-bounds Read (CWE-125)
CVE-2026-1020738.2 highNo0.3%Integer Underflow (Wrap or Wraparound) (CWE-191)
CVE-2026-1020747.5 highNo0.4%Stack-based Buffer Overflow (CWE-121)
CVE-2026-1020757.5 highNo0.4%Stack-based Buffer Overflow (CWE-121)
CVE-2026-1020767.5 highNo0.4%Stack-based Buffer Overflow (CWE-121)

Severity from the advisory (CVSS), known exploitation from CISA's catalog, exploit likelihood from EPSS (next 30 days).

Affected products

VendorProductAffected versionsFixed
SiemensAPOGEE MBC (PPC) (BACnet)vers:all/*—
SiemensAPOGEE MBC (PPC) (P2 Ethernet)vers:all/*—
SiemensAPOGEE MEC (PPC) (BACnet)vers:all/*—
SiemensAPOGEE MEC (PPC) (P2 Ethernet)vers:all/*—
SiemensAPOGEE PXC Compact (BACnet)vers:intdot/<3.5.7—
SiemensAPOGEE PXC Compact (P2 Ethernet)vers:intdot/<2.8.21—
SiemensAPOGEE PXC Modular (BACnet)vers:intdot/<3.5.7—
SiemensAPOGEE PXC Modular (P2 Ethernet)vers:intdot/<2.8.21—
SiemensDesigo PXC00-E.Dvers:intdot/>=2.3—
SiemensDesigo PXC00-Uvers:intdot/>=2.3—
SiemensDesigo PXC001-E.Dvers:intdot/>=2.3—
SiemensDesigo PXC100-E.Dvers:intdot/>=2.3—
SiemensDesigo PXC12-E.Dvers:intdot/>=2.3—
SiemensDesigo PXC128-Uvers:intdot/>=2.3—
SiemensDesigo PXC200-E.Dvers:intdot/>=2.3—
SiemensDesigo PXC22-E.Dvers:intdot/>=2.3—
SiemensDesigo PXC22.1-E.Dvers:intdot/>=2.3—
SiemensDesigo PXC36.1-E.Dvers:intdot/>=2.3—
SiemensDesigo PXC50-E.Dvers:intdot/>=2.3—
SiemensDesigo PXC64-Uvers:intdot/>=2.3—
SiemensDesigo PXM20-Evers:intdot/>=2.3—
SiemensTALON TC Compact (BACnet)vers:intdot/<3.5.7—
SiemensTALON TC Modular (BACnet)vers:intdot/<3.5.7—

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

  1. October 13, 2026: Publication Date
  2. October 22, 2026: Initial CISA Republication of Siemens ProductCERT SSA-333035 advisory
  3. November 9, 2026: First collected by Watch

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