CVE-2026-102076 Siemens CVE debrief

Who should care

Defenders responsible for Siemens products, including APOGEE MBC, APOGEE MEC, APOGEE PXC, and TALON TC, should assess exposure and apply remediation. This includes operators, platform administrators, vulnerability management teams, and security teams who need to verify exposure and apply vendor-provided remediation to prevent potential denial of service attacks.

Why it matters

CVE-2026-102076 is a denial of service vulnerability in multiple Siemens products. Defenders should prioritize verifying exposure and applying remediation.

• Denial of service attacks may occur against affected Siemens products
• Defenders must verify exposure of affected products in their environment
• Remediation priority is high due to potential for denial of service attacks
• Vendor-provided remediation should be applied as soon as possible

Technical summary

The affected product web service does not properly validate user-supplied input in upload code, which could allow an unauthenticated remote attacker to cause a denial of service. This vulnerability affects multiple Siemens products, including APOGEE MBC, APOGEE MEC, APOGEE PXC, and TALON TC. Defenders should prioritize verifying exposure of affected Siemens products and applying vendor-provided remediation to prevent potential denial of service attacks. The vulnerability has a CVSS score of 7.5 and is classified as HIGH severity.

Defensive priority

Defenders should prioritize verifying exposure of affected Siemens products and applying vendor-provided remediation.

Recommended defensive actions

• Verify exposure of affected Siemens products in your environment
• Apply vendor-provided remediation
• Monitor for potential denial of service attacks
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and Siemens advisory provide details on the affected products and versions. Affected products include 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), TALON TC Compact (BACnet), and TALON TC Modular (BACnet). Defenders should verify exposure and apply remediation based on the provided information.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.