How severe is CVE-2020-28215?

CVE-2020-28215 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-2020-28215 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-28215?

CVE-2020-28215 affects Schneider-electric Easergy T300 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-28215?

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-2020-28215 published?

CVE-2020-28215 was published on 2020-12-11 and last updated on 2026-06-17.

CVE-2020-28215

CVE-2020-28215 is a critical-severity vulnerability in Schneider-electric Easergy T300 Firmware 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-862.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Schneider-electric Easergy T300 Firmware
Published: 2020-12-11
Last modified: 2026-06-17

Description

A CWE-862: Missing Authorization vulnerability exists in Easergy T300 (firmware 2.7 and older), that could cause a wide range of problems, including information exposures, denial of service, and arbitrary code execution when access control checks are not applied consistently.

Frequently asked questions

What is CVE-2020-28215?: A CWE-862: Missing Authorization vulnerability exists in Easergy T300 (firmware 2.7 and older), that could cause a wide range of problems, including information exposures, denial of service, and arbitrary code execution when access control checks are not applied consistently.
How severe is CVE-2020-28215?: CVE-2020-28215 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-2020-28215 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-28215?: CVE-2020-28215 affects Schneider-electric Easergy T300 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-28215?: 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-2020-28215 published?: CVE-2020-28215 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:*:*:*:*:*:*:*:*

More vulnerabilities in Schneider-electric Easergy T300 Firmware

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CVE-2020-7503 — High (CVSS 8.8): A CWE-352: Cross-Site Request Forgery (CSRF) vulnerability exists in Easergy T300 (Firmware version 1.5.2 and older)…
CVE-2020-25184 — High (CVSS 7.8): Rockwell Automation ISaGRAF Runtime Versions 4.x and 5.x stores the password in plaintext in a file that is in the same…

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