CVE-2021-30195
CODESYS V2 runtime system before 2.4.7.55 has Improper Input Validation.
CODESYS V2 runtime system before 2.4.7.55 has Improper Input Validation.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
CODESYS V2 runtime system before 2.4.7.55 has Improper Input Validation.
- Record
CVE-2021-30195- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-125
- Updated
- 2026-11-02
CVE List No score
CODESYS V2 runtime system before 2.4.7.55 has Improper Input Validation.
- Record
CVE-2021-30195- Updated
- 2026-11-02
EUVDEUVD-2021-17127 No score
CODESYS V2 runtime system before 2.4.7.55 has Improper Input Validation.
- Record
EUVD-2021-17127- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-67hh-p488-99r8
CODESYS V2 runtime system before 2.4.7.55 has Improper Input Validation.
CODESYS V2 runtime system before 2.4.7.55 has Improper Input Validation.
- Record
GHSA-67hh-p488-99r8- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-125
- Updated
- 2026-11-02
Affected products
- codesys plcwinnt
- codesys runtime toolkit
- wago 750-8202 firmware
- wago 750-8203 firmware
- wago 750-8204 firmware
- wago 750-8206 firmware
- wago 750-8207 firmware
- wago 750-8208 firmware
- wago 750-8210 firmware
- wago 750-8211 firmware
- wago 750-8212 firmware
- wago 750-8213 firmware
Show 17 moreShow less
- wago 750-8214 firmware
- wago 750-8216 firmware
- wago 750-8217 firmware
- wago 750-823 firmware
- wago 750-829 firmware
- wago 750-831 firmware
- wago 750-832 firmware
- wago 750-852 firmware
- wago 750-862 firmware
- wago 750-880 firmware
- wago 750-881 firmware
- wago 750-882 firmware
- wago 750-885 firmware
- wago 750-889 firmware
- wago 750-890 firmware
- wago 750-891 firmware
- wago 750-893 firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-30195 is a high vulnerability (CVSS 7.5) in Codesys Plcwinnt, published May 25, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 7.55%, the 94th percentile. No source names a fixed version.