CVE-2021-20836 json
Out-of-bounds read vulnerability in CX-Supervisor v4.0.0.13 and v4.0.0.16 allows an attacker with administrative privileges to cause inform…
published 2021-10-19 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-8248
- cvss
- 6.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 57%
- public exploits
- 0
- none known
Summary
Out-of-bounds read vulnerability in CX-Supervisor v4.0.0.13 and v4.0.0.16 allows an attacker with administrative privileges to cause information disclosure and/or arbitrary code execution by opening a specially crafted SCS project files.
Patch / fix
Exploit prediction
0.81% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.0 | AV:N/AC:M/Au:S/C:P/I:P/A:P |
Affected products
- OMRON Corporation OMRON CX-Supervisor
Classification
- Weakness
-
- CWE-125 Out-of-bounds Read
References
-
myomron.com
/index.php?action=kb&article=1692
patch, vendor-advisory
-
jvn.jp
/en/vu/JVNVU90041391/index.html
release-notes, third-party-advisory
Sources
- CVE List CVE-2021-20836
- NVD CVE-2021-20836
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