Vulnerability · Published Aug 6, 2021 · Assigned by Mitsubishi
CVE-2021-20598
Medium 5.3
In plain English
A medium-severity security flaw in MELSEC iQ-R series CPU modules R08/16/32/120SFCPU; R08/16/32/120PSFCPU. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 75% of all known vulnerabilities).
Severity (CVSS NVD)5.3Medium
Exploit odds (30 days)1.5%top 25.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Overly Restrictive Account Lockout Mechanism vulnerability in Mitsubishi Electric MELSEC iQ-R series CPU modules (R08/16/32/120SFCPU all versions, R08/16/32/120PSFCPU all versions) allows a remote unauthenticated attacker to lockout a legitimate user by continuously trying login with incorrect password.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | MELSEC iQ-R series CPU modules R08/16/32/120SFCPU; R08/16/32/120PSFCPU | all versions |
References
- https://jvn.jp/vu/JVNVU98578731/index.html x_refsource_MISC
- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-010_en.pdf x_refsource_MISC