How severe is CVE-2021-22716?

CVE-2021-22716 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-22716 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22716?

CVE-2021-22716 affects Schneider-electric C-bus Toolkit. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-22716?

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

When was CVE-2021-22716 published?

CVE-2021-22716 was published on 2021-04-13 and last updated on 2026-06-17.

CVE-2021-22716

CVE-2021-22716 is a high-severity vulnerability in Schneider-electric C-bus Toolkit with a CVSS 3.x base score of 7.8. 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-732.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-732
Affected product: Schneider-electric C-bus Toolkit
Published: 2021-04-13
Last modified: 2026-06-17

Description

A CWE-732: Incorrect Permission Assignment for Critical Resource vulnerability exists that could allow remote code execution when an unprivileged user modifies a file. Affected Product: C-Bus Toolkit (V1.15.9 and prior)

Frequently asked questions

What is CVE-2021-22716?: A CWE-732: Incorrect Permission Assignment for Critical Resource vulnerability exists that could allow remote code execution when an unprivileged user modifies a file. Affected Product: C-Bus Toolkit (V1.15.9 and prior)
How severe is CVE-2021-22716?: CVE-2021-22716 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-22716 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22716?: CVE-2021-22716 affects Schneider-electric C-bus Toolkit. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-22716?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-22716 published?: CVE-2021-22716 was published on 2021-04-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:schneider-electric:c-bus_toolkit:*:*:*:*:*:*:*:*

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