CVE-2021-31346

CVE-2021-31346 affects Siemens Nucleus NET/KERNEL-based devices (Capital Embedded AR Classic, PLUSCONTROL, SIMOTICS CONNECT 400, Capital VSTAR, etc.). Root cause: the total length of an ICMP payload (set in the IP header) is unchecked, enabling information leaks and Denial-of-Service conditions v...

CVE-2021-31889

CVE-2021-31889 is an integer underflow in the Nucleus NET TCP/IP stack used by several Siemens products (APOGEE MBC/MEC, PLUSCONTROL, Capital VSTAR, SIMOTICS CONNECT 400, etc.). The flaw arises from malformed TCP packets with a corrupted SACK option, enabling information leaks and denial-of-servi...

CVE-2021-31890

CVE-2021-31890 stems from an unchecked TCP payload length in Siemens Nucleus NET stack used across multiple Siemens products (e.g., Capital Embedded AR Classic, PLUSCONTROL, SIMOTICS CONNECT 400, etc.). The issue enables information leaks and Denial-of-Service conditions depending on network buff...

CVE-2021-31345

CVE-2021-31345 affects Siemens Nucleus NET-based products (Capital Embedded AR Classic, CAPITAL VSTAR/PLUSCONTROL) with an unchecked UDP payload length in the IP header. Root cause: UDP payload length is not validated, enabling information leaks and potential denial-of-service depending on the us...

CVE-2021-31887

CVE-2021-31887 affects a wide range of Siemens APOGEE/TALON/Nucleus products (BACnet and P2 Ethernet variants, various Desigo/PXC/Nucleus lines). The root cause is a stack-based buffer overwrite in the FTP server caused by improper validation of the length of the PWD/XPWD command, which may allow...

CVE-2021-31886

Technical details for CVE-2021-31886 (affected software, impact, exploitability, and remediation) are not present in the provided Connected documents. Please monitor for updates.

CVE-2021-31883

CVE-2021-31883 affects Siemens APOGEE MBC / TALON products (Nucleus RTOS) including APOGEE MBC (PPC/BACnet), APOGEE MEC, APOGEE PXC Compact/Modular, Desigo PXC variants, and Capital VSTAR with Ethernet options. Root cause: DHCP client processing fails to validate the length of Vendor option(s) in...

CVE-2019-13939

CVE-2019-13939 affects Siemens Mentor Nucleus Networking Module family (including APOGEE MEC/MBC/PXC, Desigo PXC, PXM, Nucleus NET/RTOS/ReadyStart, SIMOTICS/TALON, VSTAR) across numerous versions. The root cause is improper handling of DHCP packets: when the DHCP client is enabled, an attacker se...

CVE-2021-31344

CVE-2021-31344 affects Siemens/Nucleus-based devices such as Capital Embedded AR Classic, PLUSCONTROL 1st Gen, and SIMOTICS CONNECT 400 (all versions with certain UDP/ICMP handling). The vulnerability is triggered by ICMP echo packets with fake IP options, enabling ICMP echo replies to arbitrary ...

CVE-2021-31884

CVE-2021-31884 affects Siemens Nucleus/APOGEE/TALON family (MBC/MEC/PXC/Nucleus) with a DHCP client hostname option handling flaw. The DHCP hostname data is not guaranteed to be NULL-terminated, which can cause out-of-bounds reads/writes and Denial-of-Service. The available connected sources conf...

CVE-2021-31888

Summary of CVE-2021-31888 : The vulnerability affects APOGEE/MBC/MEC/PXC family devices (BACnet/P2 Ethernet) and related Desigo/Nucleus/TALON/Nucleus RTOS components listed in the description. The issue is a stack-based buffer overflow in the FTP server caused by improper validation of the length...

CVE-2021-31881

CVE-2021-31881 involves APOGEE MBC/TALON/Desigo PXC software family (Siemens Nucleus RTOS, BACnet/PPC) where the DHCP client fails to validate the Vendor option length when processing DHCP OFFER, leading to Denial-of-Service. Multiple Tenable OT/Nessus entries corroborate this family of DHCP leng...

CVE-2021-31885

CVE-2021-31885 : TFTP memory buffer reading vulnerability reported in Siemens Nucleus APOGEE/MBC/TALON/TALON-related products (PPC/BACnet, P2 Ethernet, Desigo PXC, PXM, Nucleus NET, etc.) where a malformed TFTP command can read the contents of the TFTP memory buffer. Source documents from the vul...

CVE-2021-31882

CVE-2021-31882 affects Siemens APOGEE MBC/TALON/Nucleus products (e.g., Capital Embedded AR Classic 431-422 family and AR Classic R20-11, affected “All versions” in some entries). The root cause is that the DHCP client does not validate the length of the Domain Name Server IP option (0x06) when p...

CVE-2020-28388

The CVE-2020-28388 issue affects Siemens APOGEE PXC and TALON TC series, Nucleus NET/ReadyStart/Source Code, PLUSCONTROL, and related products. Root cause: Initial Sequence Numbers (ISNs) for TCP connections are derived from an insufficiently random source, making current and future ISNs predicta...