CVE-2021-27391
- State
- Published
- Severity
- 9.8 Critical
- Published
- Sep 14, 2021
- Updated
- Apr 23, 2025
- Reserved
- Feb 18, 2021
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Affected Products
| Product | Versions |
|---|---|
APOGEE MBC (PPC) (P2 Ethernet)Siemens |
|
APOGEE MEC (PPC) (P2 Ethernet)Siemens |
|
APOGEE PXC Compact (BACnet)Siemens |
|
APOGEE PXC Compact (P2 Ethernet)Siemens |
|
APOGEE PXC Modular (BACnet)Siemens |
|
APOGEE PXC Modular (P2 Ethernet)Siemens |
|
TALON TC Compact (BACnet)Siemens |
|
TALON TC Modular (BACnet)Siemens |
|
References
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