How severe is CVE-2020-28211?

CVE-2020-28211 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-2020-28211 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-28211?

CVE-2020-28211 affects Schneider-electric Ecostruxure Control Expert. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-28211?

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-2020-28211 published?

CVE-2020-28211 was published on 2020-11-19 and last updated on 2026-06-17.

CVE-2020-28211

CVE-2020-28211 is a high-severity vulnerability in Schneider-electric Ecostruxure Control Expert 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-863.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Schneider-electric Ecostruxure Control Expert
Published: 2020-11-19
Last modified: 2026-06-17

Description

A CWE-863: Incorrect Authorization vulnerability exists in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions) that could cause bypass of authentication when overwriting memory using a debugger.

Frequently asked questions

What is CVE-2020-28211?: A CWE-863: Incorrect Authorization vulnerability exists in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions) that could cause bypass of authentication when overwriting memory using a debugger.
How severe is CVE-2020-28211?: CVE-2020-28211 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-2020-28211 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-28211?: CVE-2020-28211 affects Schneider-electric Ecostruxure Control Expert. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-28211?: 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-2020-28211 published?: CVE-2020-28211 was published on 2020-11-19 and last updated on 2026-06-17.

References

https://www.se.com/ww/en/download/document/SEVD-2020-315-07

Affected products (1)

cpe:2.3:a:schneider-electric:ecostruxure_control_expert:*:*:*:*:*:*:*:*

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