CVEvulnerability

CVE-2021-27391

9.8 CRITICAL Published 2021-09-14 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-09-14
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
10.0 HIGH — AV:N/AC:L/Au:N/C:C/I:C/A:C
Weaknesses
CWE-120

Description

A vulnerability has been identified in APOGEE MBC (PPC) (P2 Ethernet) (All versions >= V2.6.3), APOGEE MEC (PPC) (P2 Ethernet) (All versions >= V2.6.3), APOGEE PXC Compact (BACnet) (All versions < V3.5.3), APOGEE PXC Compact (P2 Ethernet) (All versions >= V2.8), APOGEE PXC Modular (BACnet) (All versions < V3.5.3), APOGEE PXC Modular (P2 Ethernet) (All versions >= V2.8), TALON TC Compact (BACnet) (All versions < V3.5.3), TALON TC Modular (BACnet) (All versions < V3.5.3). The web server of affected devices lacks proper bounds checking when parsing the Host parameter in HTTP requests, which could lead to a buffer overflow. An unauthenticated remote attacker could exploit this vulnerability to execute arbitrary code on the device with root privileges.

Affected configurations

• siemens apogee mbc \(ppc\) \(p2 ethernet\) firmware (<= 2.6.3) • siemens apogee mec \(ppc\) \(p2 ethernet\) firmware (<= 2.6.3) • siemens apogee pxc bacnet automation controller firmware (< 3.5.3) • siemens apogee pxc compact \(p2 ethernet\) firmware (<= 2.8) • siemens apogee pxc modular \(bacnet\) firmware (< 3.5.3) • siemens apogee pxc modular \(p2 ethernet\) firmware (<= 2.8) • siemens talon tc compact \(bacnet\) firmware (< 3.5.3) • siemens talon tc modular \(bacnet\) firmware (< 3.5.3)

Related

Weakness · CWE (1)

  • CWE-120 Buffer Copy without Checking Size of Input weakness

References