How severe is CVE-2023-27976?

CVE-2023-27976 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-2023-27976 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-27976?

CVE-2023-27976 affects Schneider-electric Ecostruxure Control Expert. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-27976?

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-2023-27976 published?

CVE-2023-27976 was published on 2023-04-18 and last updated on 2026-06-17.

CVE-2023-27976

CVE-2023-27976 is a high-severity vulnerability in Schneider-electric Ecostruxure Control Expert 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-668.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-668
Affected product: Schneider-electric Ecostruxure Control Expert
Published: 2023-04-18
Last modified: 2026-06-17

Description

A CWE-668: Exposure of Resource to Wrong Sphere vulnerability exists that could cause remote code execution when a valid user visits a malicious link provided through the web endpoints. Affected Products: EcoStruxure Control Expert (V15.1 and above)

Frequently asked questions

What is CVE-2023-27976?: A CWE-668: Exposure of Resource to Wrong Sphere vulnerability exists that could cause remote code execution when a valid user visits a malicious link provided through the web endpoints. Affected Products: EcoStruxure Control Expert (V15.1 and above)
How severe is CVE-2023-27976?: CVE-2023-27976 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-2023-27976 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-27976?: CVE-2023-27976 affects Schneider-electric Ecostruxure Control Expert. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-27976?: 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-2023-27976 published?: CVE-2023-27976 was published on 2023-04-18 and last updated on 2026-06-17.

References

https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2023-101-03&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2023-101-03.pdf

Affected products (1)

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

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