How severe is CVE-2021-22771?

CVE-2021-22771 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-22771 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22771?

CVE-2021-22771 affects Schneider-electric Easergy T300 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-22771?

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-2021-22771 published?

CVE-2021-22771 was published on 2021-07-21 and last updated on 2026-06-17.

CVE-2021-22771

CVE-2021-22771 is a high-severity vulnerability in Schneider-electric Easergy T300 Firmware with a CVSS 3.x base score of 7.3. 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-1236.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 6.0
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1236
Affected product: Schneider-electric Easergy T300 Firmware
Published: 2021-07-21
Last modified: 2026-06-17

Description

A CWE-1236: Improper Neutralization of Formula Elements in a CSV File vulnerability exists in Easergy T300 with firmware V2.7.1 and older that would allow arbitrary command execution.

Frequently asked questions

What is CVE-2021-22771?: A CWE-1236: Improper Neutralization of Formula Elements in a CSV File vulnerability exists in Easergy T300 with firmware V2.7.1 and older that would allow arbitrary command execution.
How severe is CVE-2021-22771?: CVE-2021-22771 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-22771 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22771?: CVE-2021-22771 affects Schneider-electric Easergy T300 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-22771?: 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-2021-22771 published?: CVE-2021-22771 was published on 2021-07-21 and last updated on 2026-06-17.

References

http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-194-02

Affected products (1)

cpe:2.3:o:schneider-electric:easergy_t300_firmware:*:*:*:*:*:*:*:*

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