How severe is CVE-2020-28218?

CVE-2020-28218 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2020-28218 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-28218?

CVE-2020-28218 affects Schneider-electric Easergy T300 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-28218?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-28218 published?

CVE-2020-28218 was published on 2020-12-11 and last updated on 2026-06-17.

CVE-2020-28218

CVE-2020-28218 is a medium-severity vulnerability in Schneider-electric Easergy T300 Firmware with a CVSS 3.x base score of 6.5. 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-1021.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1021
Affected product: Schneider-electric Easergy T300 Firmware
Published: 2020-12-11
Last modified: 2026-06-17

Description

A CWE-1021: Improper Restriction of Rendered UI Layers or Frames vulnerability exists in Easergy T300 (firmware 2.7 and older), that would allow an attacker to trick a user into initiating an unintended action.

Frequently asked questions

What is CVE-2020-28218?: A CWE-1021: Improper Restriction of Rendered UI Layers or Frames vulnerability exists in Easergy T300 (firmware 2.7 and older), that would allow an attacker to trick a user into initiating an unintended action.
How severe is CVE-2020-28218?: CVE-2020-28218 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2020-28218 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-28218?: CVE-2020-28218 affects Schneider-electric Easergy T300 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-28218?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-28218 published?: CVE-2020-28218 was published on 2020-12-11 and last updated on 2026-06-17.

References

Affected products (1)

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

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