- EPSS 1.6%
- Published 26.10.2021 10:15:08
- Last modified 15.08.2025 20:25:58
In CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56 unauthenticated crafted invalid requests may result in several denial-of-service conditions. Running PLC programs may be stopped, memory may be leaked, or further comm...
CVE-2021-34584
- EPSS 0.61%
- Published 26.10.2021 10:15:07
- Last modified 15.08.2025 20:26:40
Crafted web server requests can be utilised to read partial stack or heap memory or may trigger a denial-of- service condition due to a crash in the CODESYS V2 web server prior to V1.1.9.22.
CVE-2021-34586
- EPSS 3.29%
- Published 26.10.2021 10:15:07
- Last modified 15.08.2025 20:26:04
In the CODESYS V2 web server prior to V1.1.9.22 crafted web server requests may cause a Null pointer dereference in the CODESYS web server and may result in a denial-of-service condition.
- EPSS 0.47%
- Published 26.10.2021 10:15:07
- Last modified 15.08.2025 20:26:31
In the CODESYS V2 web server prior to V1.1.9.22 crafted web server requests can trigger a parser error. Since the parser result is not checked under all conditions, a pointer dereference with an invalid address can occur. This leads to a denial of se...
CVE-2021-34583
- EPSS 3.82%
- Published 26.10.2021 10:15:07
- Last modified 15.08.2025 20:26:48
Crafted web server requests may cause a heap-based buffer overflow and could therefore trigger a denial-of- service condition due to a crash in the CODESYS V2 web server prior to V1.1.9.22.
CVE-2021-30195
- EPSS 0.42%
- Published 25.05.2021 13:15:17
- Last modified 15.08.2025 20:26:54
CODESYS V2 runtime system before 2.4.7.55 has Improper Input Validation.
CVE-2021-30194
- EPSS 0.53%
- Published 25.05.2021 13:15:17
- Last modified 15.08.2025 20:27:01
CODESYS V2 Web-Server before 1.1.9.20 has an Out-of-bounds Read.
CVE-2021-30193
- EPSS 0.53%
- Published 25.05.2021 13:15:17
- Last modified 15.08.2025 20:27:21
CODESYS V2 Web-Server before 1.1.9.20 has an Out-of-bounds Write.
CVE-2021-30192
- EPSS 0.53%
- Published 25.05.2021 13:15:17
- Last modified 15.08.2025 20:27:29
CODESYS V2 Web-Server before 1.1.9.20 has an Improperly Implemented Security Check.
CVE-2021-30191
- EPSS 0.41%
- Published 25.05.2021 13:15:17
- Last modified 15.08.2025 20:27:36
CODESYS V2 Web-Server before 1.1.9.20 has a a Buffer Copy without Checking the Size of the Input.