CVE-2021-22800 json
A CWE-20: Improper Input Validation vulnerability exists that could cause a Denial of Service when a crafted packet is sent to the controll…
published 2022-02-11 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-9935
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 63%
- public exploits
- 0
- none known
Summary
A CWE-20: Improper Input Validation vulnerability exists that could cause a Denial of Service when a crafted packet is sent to the controller over network port 1105/TCP. Affected Product: Modicon M218 Logic Controller (V5.1.0.6 and prior)
Patch / fix
Exploit prediction
1.00% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Affected products
- n/a Modicon M218 Logic Controller (V5.1.0.6 and prior)
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
download.schneider-electric.com
/files?p_Doc_Ref=SEVD-2021-285-04
patch, vendor-advisory
Sources
- CVE List CVE-2021-22800
- NVD CVE-2021-22800
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