How severe is CVE-2021-22668?

CVE-2021-22668 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-22668 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22668?

CVE-2021-22668 affects Deltaww Cncsoft Screeneditor. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-22668?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-22668 published?

CVE-2021-22668 was published on 2021-05-16 and last updated on 2026-06-17.

CVE-2021-22668

CVE-2021-22668 is a critical-severity vulnerability in Deltaww Cncsoft Screeneditor with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Deltaww Cncsoft Screeneditor
Published: 2021-05-16
Last modified: 2026-06-17

Description

Delta Industrial Automation CNCSoft ScreenEditor Versions 1.01.28 (with ScreenEditor Version 1.01.2) and prior are vulnerable to an out-of-bounds read while processing project files, which may allow an attacker to execute arbitrary code.

Frequently asked questions

What is CVE-2021-22668?: Delta Industrial Automation CNCSoft ScreenEditor Versions 1.01.28 (with ScreenEditor Version 1.01.2) and prior are vulnerable to an out-of-bounds read while processing project files, which may allow an attacker to execute arbitrary code.
How severe is CVE-2021-22668?: CVE-2021-22668 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-22668 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22668?: CVE-2021-22668 affects Deltaww Cncsoft Screeneditor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-22668?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-22668 published?: CVE-2021-22668 was published on 2021-05-16 and last updated on 2026-06-17.

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-110-04

Affected products (1)

cpe:2.3:a:deltaww:cncsoft_screeneditor:*:*:*:*:*:*:*:*

More vulnerabilities in Deltaww Cncsoft Screeneditor

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CVE-2020-16203 — High (CVSS 7.8): Delta Industrial Automation CNCSoft ScreenEditor, Versions 1.01.23 and prior. An uninitialized pointer may be exploited…
CVE-2020-16199 — High (CVSS 7.8): Delta Industrial Automation CNCSoft ScreenEditor, Versions 1.01.23 and prior. Multiple stack-based buffer overflow…
CVE-2020-7002 — High (CVSS 7.8): Delta Industrial Automation CNCSoft ScreenEditor, v1.00.96 and prior. Multiple stack-based buffer overflows can be…
CVE-2019-10951 — High (CVSS 7.8): Delta Industrial Automation CNCSoft, CNCSoft ScreenEditor Version 1.00.88 and prior. Multiple heap-based buffer…

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Other CWE-125 (Out-of-bounds Read) vulnerabilities

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CVE-2021-41556 — Critical (CVSS 10.0): sqclass.cpp in Squirrel through 2.2.5 and 3.x through 3.1 allows an out-of-bounds read (in the core interpreter) that…
CVE-2021-21777 — Critical (CVSS 10.0): An information disclosure vulnerability exists in the Ethernet/IP UDP handler functionality of EIP Stack Group OpENer…
CVE-2017-14451 — Critical (CVSS 10.0): An exploitable out-of-bounds read vulnerability exists in libevm (Ethereum Virtual Machine) of CPP-Ethereum. A…
CVE-2013-0767 — Critical (CVSS 10.0): The nsSVGPathElement::GetPathLengthScale function in Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and…

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