CVE-2021-22664 json
CNCSoft-B Versions 1.0.0.3 and prior is vulnerable to an out-of-bounds write, which may allow an attacker to execute arbitrary code.
published 2021-04-27 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-9800
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.6%
- EPSS 1.6% chance of exploitation in 30 days, percentile 75%
- public exploits
- 0
- none known
Summary
CNCSoft-B Versions 1.0.0.3 and prior is vulnerable to an out-of-bounds write, 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-21-110-05 updated cvss 7.8
Delta Electronics CNCSoft-B
-
Delta Electronics CNCSoft-B <= 1.0.0.3affected: vendor fix 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
1.56% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| 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
- n/a Delta Electronics CNCSoft-B
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
zerodayinitiative.com
/advisories/ZDI-21-444/
third-party-advisory, vdb-entry
-
us-cert.cisa.gov
/ics/advisories/icsa-21-110-05
third-party-advisory, us-government-resource
Sources
- CVE List CVE-2021-22664
- NVD CVE-2021-22664
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.