CVE-2021-43555 in the critical feed json
mySCADA myDESIGNER
published 2021-11-19 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-30484
- cvss
- 7.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 38.2%
- EPSS 38.2% chance of exploitation in 30 days, percentile 98%
- public exploits
- 0
- none known
Summary
mySCADA myDESIGNER Versions 8.20.0 and prior fails to properly validate contents of an imported project file, which may make the product vulnerable to a path traversal payload. This vulnerability may allow an attacker to plant files on the file system in arbitrary locations or overwrite existing files, resulting in remote code execution.
Patch / fix
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
cisa ICSA-21-313-04 updated cvss 7.3
mySCADA myDESIGNER
-
mySCADA myDESIGNER <= 8.20.0affected: mitigation “mySCADA recommends users apply update v8.22.0 or later.” myscada.org
From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf
Exploit prediction
38.24% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H |
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- mySCADA myDESIGNER
Classification
References
-
us-cert.cisa.gov
/ics/advisories/icsa-21-313-04
patch, third-party-advisory, us-government-resource
Sources
- CVE List CVE-2021-43555
- NVD CVE-2021-43555
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.