CVE-2026-102076 Denial of service in APOGEE MBC (PPC) (BACnet)
Unauthenticated remote attackers can cause a denial of service in Siemens APOGEE and TALON building automation controllers via improper input validation in the web service upload code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-102076?
CVE-2026-102076 is a high-severity denial of service vulnerability in Siemens APOGEE MBC (PPC) (BACnet), published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability has been identified in APOGEE MBC (PPC) (BACnet) (All versions), APOGEE MBC (PPC) (P2 Ethernet) (All versions), APOGEE MEC (PPC) (BACnet) (All versions), APOGEE MEC (PPC) (P2 Ethernet) (All versions), APOGEE PXC Compact (BACnet) (All versions < V3.5.7), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.21), APOGEE PXC Modular (BACnet) (All versions < V3.5.7), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.21), TALON TC Compact (BACnet) (All versions < V3.5.7), TALON TC Modular (BACnet) (All versions < V3.5.7). The affected product web service does not properly validate user-supplied input in upload code. This could allow an unauthenticated remote attacker to cause a denial of service.
Weakness: CWE-121
Which versions are affected by CVE-2026-102076?
How do I fix CVE-2026-102076?
No fix has been published for CVE-2026-102076 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-102076 being exploited?
There is no known exploitation of CVE-2026-102076 in the wild and no public exploit code.
Sources
Also known as GHSA-2g62-h8gg-9gf7.