Siemens APOGEE, TALON and Desigo PXC/PXM Products: 5 CVEs, High 8.2
Summary
CISA reports 5 vulnerabilities in Siemens APOGEE MBC (PPC) (BACnet), APOGEE MBC (PPC) (P2 Ethernet), APOGEE MEC (PPC) (BACnet), APOGEE MEC (PPC) (P2 Ethernet) and 19 more. Weakness types: Out-of-bounds Read, Integer Underflow (Wrap or Wraparound), Stack-based Buffer Overflow. 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. Highest CVSS v3 score: 8.2 (High), exploitable over the network.
At a glance
- Vendor
- Siemens
- Products
- APOGEE MBC (PPC) (BACnet), APOGEE MBC (PPC) (P2 Ethernet), APOGEE MEC (PPC) (BACnet), APOGEE MEC (PPC) (P2 Ethernet), APOGEE PXC Compact (BACnet), APOGEE PXC Compact (P2 Ethernet), APOGEE PXC Modular (BACnet), APOGEE PXC Modular (P2 Ethernet)
- CVEs
- CVE-2026-89208, CVE-2026-102073, CVE-2026-102074, CVE-2026-102075, CVE-2026-102076
- Highest CVSS v3
- 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
- Highest CVSS v4
- –
- Known exploited (KEV)
- No CVE from this advisory is on the KEV list as of the last refresh
- Sectors (per CISA)
- Critical Manufacturing, Transportation Systems, Energy, Healthcare and Public Health, Financial Services, Government Services and Facilities
- Deployed
- Worldwide
- Vendor HQ
- Germany
Vulnerabilities
| CVE | Weakness | CVSS v3 | CVSS v4 | KEV | Description (from advisory) |
|---|---|---|---|---|---|
| CVE-2026-89208 | Out-of-bounds Read | 5.3 | – | No | CVE-2026-89208 |
| CVE-2026-102073 | Integer Underflow (Wrap or Wraparound) | 8.2 | – | No | CVE-2026-102073 |
| CVE-2026-102074 | Stack-based Buffer Overflow | 7.5 | – | No | CVE-2026-102074 |
| CVE-2026-102075 | Stack-based Buffer Overflow | 7.5 | – | No | CVE-2026-102075 |
| CVE-2026-102076 | Stack-based Buffer Overflow | 7.5 | – | No | CVE-2026-102076 |
Affected products (23)
- APOGEE MBC (PPC) (BACnet)
- APOGEE MBC (PPC) (P2 Ethernet)
- APOGEE MEC (PPC) (BACnet)
- APOGEE MEC (PPC) (P2 Ethernet)
- APOGEE PXC Compact (BACnet) < V3.5.7
- APOGEE PXC Compact (P2 Ethernet) < V2.8.21
- APOGEE PXC Modular (BACnet) < V3.5.7
- APOGEE PXC Modular (P2 Ethernet) < V2.8.21
- Desigo PXC00-E.D >= V2.3
- Desigo PXC00-U >= V2.3
- Desigo PXC001-E.D >= V2.3
- Desigo PXC100-E.D >= V2.3
- Desigo PXC12-E.D >= V2.3
- Desigo PXC128-U >= V2.3
- Desigo PXC200-E.D >= V2.3
- Desigo PXC22-E.D >= V2.3
- Desigo PXC22.1-E.D >= V2.3
- Desigo PXC36.1-E.D >= V2.3
- Desigo PXC50-E.D >= V2.3
- Desigo PXC64-U >= V2.3
- Desigo PXM20-E >= V2.3
- TALON TC Compact (BACnet) < V3.5.7
- TALON TC Modular (BACnet) < V3.5.7
Vendor fixes and mitigations (from advisory)
- Mitigation: CVE-2026-89208 - Apply network segmentation and put the controllers behind properly configured gateways/firewalls.
- No Fix Planned: Currently no fix is planned
- Mitigation: Disable the FTP/Web service (Note that the FTP/Web service is disabled by default on APOGEE, Desigo, and TALON products.)
- Vendor Fix: Update to V2.8.21 or later version link
- Vendor Fix: Update to V3.5.7 or later version link
Also apply CISA's standard ICS practices: minimize network exposure, keep control networks behind firewalls and isolated from business networks, and use up-to-date secure remote access.
Sources
- CISA advisory ICSA-26-295-08
- Machine-readable CSAF record
- https://cert-portal.siemens.com/productcert/csaf/ssa-333035.json
- https://cert-portal.siemens.com/productcert/html/ssa-333035.html
This page is generated automatically from the CISA advisory text. It is not a substitute for the vendor's guidance; verify affected versions and fixes at the source before making changes to control systems.