CVE-2026-102073 PUBLISHED

Assigner: siemens
Reserved: 28.09.2026 Published: 13.10.2026 Updated: 13.10.2026

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 the length of user-controllable input. This could allow an unauthenticated remote attacker to read portions of device memory or to cause a denial-of-service condition.

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
CVSS Score: 8.2

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	Low

CVSS 3.1

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N
CVSS Score: 8.8

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	Low	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	Siemens
Product	APOGEE MBC (PPC) (BACnet)
Versions	Default: unknown affected from 0 to * (excl.)

Vendor	Siemens
Product	APOGEE MBC (PPC) (P2 Ethernet)
Versions	Default: unknown affected from 0 to * (excl.)

Vendor	Siemens
Product	APOGEE MEC (PPC) (BACnet)
Versions	Default: unknown affected from 0 to * (excl.)

Vendor	Siemens
Product	APOGEE MEC (PPC) (P2 Ethernet)
Versions	Default: unknown affected from 0 to * (excl.)

Vendor	Siemens
Product	APOGEE PXC Compact (BACnet)
Versions	Default: unknown affected from 0 to V3.5.7 (excl.)

Vendor	Siemens
Product	APOGEE PXC Compact (P2 Ethernet)
Versions	Default: unknown affected from 0 to V2.8.21 (excl.)

Vendor	Siemens
Product	APOGEE PXC Modular (BACnet)
Versions	Default: unknown affected from 0 to V3.5.7 (excl.)

Vendor	Siemens
Product	APOGEE PXC Modular (P2 Ethernet)
Versions	Default: unknown affected from 0 to V2.8.21 (excl.)

Vendor	Siemens
Product	TALON TC Compact (BACnet)
Versions	Default: unknown affected from 0 to V3.5.7 (excl.)

Vendor	Siemens
Product	TALON TC Modular (BACnet)
Versions	Default: unknown affected from 0 to V3.5.7 (excl.)

References

https://cert-portal.siemens.com/productcert/html/ssa-333035.html

Problem Types

CWE-191: Integer Underflow (Wrap or Wraparound) CWE