Vulnerabilities > Siemens > Simatic Process Historian OPC UA Server Firmware
| DATE | CVE | VULNERABILITY TITLE | RISK |
|---|---|---|---|
| 2021-08-27 | CVE-2021-40142 | Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in multiple products In OPC Foundation Local Discovery Server (LDS) before 1.04.402.463, remote attackers can cause a denial of service (DoS) by sending carefully crafted messages that lead to Access of a Memory Location After the End of a Buffer. | 5.0 |
| 2021-03-25 | CVE-2021-3449 | NULL Pointer Dereference vulnerability in multiple products An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. | 5.9 |