CVE-2021-43982 json
Delta Electronics CNCSoft
published 2021-12-09 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-30843
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 9.6%
- EPSS 9.6% chance of exploitation in 30 days, percentile 95%
- public exploits
- 0
- none known
Summary
Delta Electronics CNCSoft Versions 1.01.30 and prior are vulnerable to a stack-based buffer overflow, which may allow an attacker to execute arbitrary code.
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
cisa ICSA-21-334-03 updated cvss 7.8
Delta Electronics CNCSoft
-
Delta Electronics CNCSoft <= 1.01.30affected: vendor fix, mitigation “Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the Internet.” downloadcenter.deltaww.com
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
9.59% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/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
- Delta Electronics CNCSoft
Classification
- Weakness
-
- CWE-121 Stack-based Buffer Overflow
References
-
cisa.gov
/uscert/ics/advisories/icsa-21-334-03
mitigation, third-party-advisory, us-government-resource
Sources
- CVE List CVE-2021-43982
- NVD CVE-2021-43982
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