How severe is CVE-2020-28216?

CVE-2020-28216 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-28216 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-28216?

CVE-2020-28216 affects Schneider-electric Easergy T300 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-28216?

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-2020-28216 published?

CVE-2020-28216 was published on 2020-12-11 and last updated on 2026-06-17.

CVE-2020-28216

CVE-2020-28216 is a high-severity vulnerability in Schneider-electric Easergy T300 Firmware with a CVSS 3.x base score of 7.5. 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-311.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-311
Affected product: Schneider-electric Easergy T300 Firmware
Published: 2020-12-11
Last modified: 2026-06-17

Description

A CWE-311: Missing Encryption of Sensitive Data vulnerability exists in Easergy T300 (firmware 2.7 and older), that would allow an attacker to read network traffic over HTTP protocol.

Frequently asked questions

What is CVE-2020-28216?: A CWE-311: Missing Encryption of Sensitive Data vulnerability exists in Easergy T300 (firmware 2.7 and older), that would allow an attacker to read network traffic over HTTP protocol.
How severe is CVE-2020-28216?: CVE-2020-28216 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-28216 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-28216?: CVE-2020-28216 affects Schneider-electric Easergy T300 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-28216?: 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-2020-28216 published?: CVE-2020-28216 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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