How severe is CVE-2020-7503?

CVE-2020-7503 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-7503 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-7503?

CVE-2020-7503 affects Schneider-electric Easergy T300 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-7503?

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-2020-7503 published?

CVE-2020-7503 was published on 2020-06-16 and last updated on 2026-06-17.

CVE-2020-7503

CVE-2020-7503 is a high-severity vulnerability in Schneider-electric Easergy T300 Firmware with a CVSS 3.x base score of 8.8. 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-352.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Schneider-electric Easergy T300 Firmware
Published: 2020-06-16
Last modified: 2026-06-17

Description

A CWE-352: Cross-Site Request Forgery (CSRF) vulnerability exists in Easergy T300 (Firmware version 1.5.2 and older) which could allow an attacker to execute malicious commands on behalf of a legitimate user when xsrf-token data is intercepted.

Frequently asked questions

What is CVE-2020-7503?: A CWE-352: Cross-Site Request Forgery (CSRF) vulnerability exists in Easergy T300 (Firmware version 1.5.2 and older) which could allow an attacker to execute malicious commands on behalf of a legitimate user when xsrf-token data is intercepted.
How severe is CVE-2020-7503?: CVE-2020-7503 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-7503 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-7503?: CVE-2020-7503 affects Schneider-electric Easergy T300 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-7503?: 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-2020-7503 published?: CVE-2020-7503 was published on 2020-06-16 and last updated on 2026-06-17.

References

https://www.se.com/ww/en/download/document/SEVD-2020-161-04

Affected products (1)

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

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