How severe is CVE-2020-7568?

CVE-2020-7568 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2020-7568 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-7568?

CVE-2020-7568 affects Schneider-electric Modicon M221 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-7568?

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

When was CVE-2020-7568 published?

CVE-2020-7568 was published on 2020-11-19 and last updated on 2026-06-17.

CVE-2020-7568

CVE-2020-7568 is a medium-severity vulnerability in Schneider-electric Modicon M221 Firmware with a CVSS 3.x base score of 4.3. 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-200.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 3.3
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Schneider-electric Modicon M221 Firmware
Published: 2020-11-19
Last modified: 2026-06-17

Description

A CWE-200: Exposure of Sensitive Information to an Unauthorized Actor vulnerability exists in Modicon M221 (all references, all versions) that could allow non sensitive information disclosure when the attacker has captured the traffic between EcoStruxure Machine - Basic software and Modicon M221 controller.

Frequently asked questions

What is CVE-2020-7568?: A CWE-200: Exposure of Sensitive Information to an Unauthorized Actor vulnerability exists in Modicon M221 (all references, all versions) that could allow non sensitive information disclosure when the attacker has captured the traffic between EcoStruxure Machine - Basic software and Modicon M221 controller.
How severe is CVE-2020-7568?: CVE-2020-7568 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2020-7568 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-7568?: CVE-2020-7568 affects Schneider-electric Modicon M221 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-7568?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-7568 published?: CVE-2020-7568 was published on 2020-11-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:schneider-electric:modicon_m221_firmware:-:*:*:*:*:*:*:*

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