Vulnerability · Published May 26, 2021 · Assigned by schneider
CVE-2021-22699
High 7.5
In plain English
A high-severity improper input validation in Modicon M241/M251 logic controllers firmware prior to V5.1.9.1. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 62% of all known vulnerabilities).
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.0%top 37.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Improper Input Validation vulnerability exists in Modicon M241/M251 logic controllers firmware prior to V5.1.9.1 that could cause denial of service when specific crafted requests are sent to the controller over HTTP.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | Modicon M241/M251 logic controllers firmware prior to V5.1.9.1 | Modicon M241/M251 logic controllers firmware prior to V5.1.9.1 |
Weakness: CWE-20