Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2021-27391

Severity CVSS v4.0:
Pending analysis
Type:
CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Publication date:
14/09/2021
Last modified:
23/04/2025

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 = V2.8), APOGEE PXC Modular (BACnet) (All versions = V2.8), TALON TC Compact (BACnet) (All versions

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
9.80
Severity 3.x
CRITICAL
Vector 2.0
AV:N/AC:L/Au:N/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 10.00 HIGH
Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete

Base Score 2.0
10.00
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:siemens:apogee_mbc_\(ppc\)_\(p2_ethernet\)_firmware:*:*:*:*:*:*:*:* 2.6.3 (including)
cpe:2.3:h:siemens:apogee_mbc_\(ppc\)_\(p2_ethernet\):*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:apogee_mec_\(ppc\)_\(p2_ethernet\)_firmware:*:*:*:*:*:*:*:* 2.6.3 (including)
cpe:2.3:h:siemens:apogee_mec_\(ppc\)_\(p2_ethernet\):*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:apogee_pxc_bacnet_automation_controller_firmware:*:*:*:*:*:*:*:* 3.5.3 (excluding)
cpe:2.3:h:siemens:apogee_pxc_bacnet_automation_controller:-:*:*:*:*:*:*:*
cpe:2.3:o:siemens:apogee_pxc_compact_\(p2_ethernet\)_firmware:*:*:*:*:*:*:*:* 2.8 (including)
cpe:2.3:h:siemens:apogee_pxc_compact_\(p2_ethernet\):*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:apogee_pxc_modular_\(bacnet\)_firmware:*:*:*:*:*:*:*:* 3.5.3 (excluding)
cpe:2.3:h:siemens:apogee_pxc_modular_\(bacnet\):*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:apogee_pxc_modular_\(p2_ethernet\)_firmware:*:*:*:*:*:*:*:* 2.8 (including)
cpe:2.3:h:siemens:apogee_pxc_modular_\(p2_ethernet\):*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:talon_tc_compact_\(bacnet\)_firmware:*:*:*:*:*:*:*:* 3.5.3 (excluding)
cpe:2.3:h:siemens:talon_tc_compact_\(bacnet\):*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:talon_tc_modular_\(bacnet\)_firmware:*:*:*:*:*:*:*:* 3.5.3 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools