How severe is CVE-2023-5391?

CVE-2023-5391 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-5391 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-2023-5391?

CVE-2023-5391 primarily affects Schneider-electric Ecostruxure Power Monitoring Expert. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-5391?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-5391 published?

CVE-2023-5391 was published on 2023-10-04 and last updated on 2026-06-17.

CVE-2023-5391

CVE-2023-5391 is a critical-severity vulnerability in Schneider-electric Ecostruxure Power Monitoring Expert with a CVSS 3.x base score of 9.8. 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-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Schneider-electric Ecostruxure Power Monitoring Expert
Published: 2023-10-04
Last modified: 2026-06-17

Description

A CWE-502: Deserialization of untrusted data vulnerability exists that could allow an attacker to execute arbitrary code on the targeted system by sending a specifically crafted packet to the application.

Frequently asked questions

What is CVE-2023-5391?: A CWE-502: Deserialization of untrusted data vulnerability exists that could allow an attacker to execute arbitrary code on the targeted system by sending a specifically crafted packet to the application.
How severe is CVE-2023-5391?: CVE-2023-5391 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-5391 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-2023-5391?: CVE-2023-5391 primarily affects Schneider-electric Ecostruxure Power Monitoring Expert. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-5391?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-5391 published?: CVE-2023-5391 was published on 2023-10-04 and last updated on 2026-06-17.

References

https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2023-283-02&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2023-283-02.pdf

Affected products (3)

cpe:2.3:a:schneider-electric:ecostruxure_power_monitoring_expert:*:*:*:*:*:*:*:*
cpe:2.3:a:schneider-electric:ecostruxure_power_operation_with_advanced_reports:*:*:*:*:*:*:*:*
cpe:2.3:a:schneider-electric:ecostruxure_power_scada_operation_with_advanced_reports:*:*:*:*:*:*:*:*

More vulnerabilities in Schneider-electric Ecostruxure Power Monitoring Expert

CVE-2022-22727 — High (CVSS 8.8): A CWE-20: Improper Input Validation vulnerability exists that could allow an unauthenticated attacker to view data,…
CVE-2021-22827 — High (CVSS 8.8): A CWE-20: Improper Input Validation vulnerability exists that could cause arbitrary code execution when the user visits…
CVE-2021-22826 — High (CVSS 8.8): A CWE-20: Improper Input Validation vulnerability exists that could cause arbitrary code execution when the user visits…
CVE-2020-7547 — High (CVSS 8.8): A CWE-284: Improper Access Control vulnerability exists in EcoStruxureª and SmartStruxureª Power Monitoring and SCADA…
CVE-2023-5986 — High (CVSS 8.2): A CWE-601 URL Redirection to Untrusted Site vulnerability exists that could cause an openredirect vulnerability leading…
CVE-2025-11739 — High (CVSS 7.8): CWE‑502: Deserialization of Untrusted Data vulnerability exists that could cause arbitrary code execution with…

All CVEs affecting Schneider-electric Ecostruxure Power Monitoring Expert →

Other CWE-502 (Deserialization of Untrusted Data) vulnerabilities

CVE-2026-41104 — Critical (CVSS 10.0): Deserialization of untrusted data in Microsoft Planetary Computer Pro allows an unauthorized attacker to disclose…
CVE-2026-43633 — Critical (CVSS 10.0): HestiaCP versions 1.9.0 through 1.9.4 contain a deserialization vulnerability in the web terminal component caused by a…
CVE-2026-33819 — Critical (CVSS 10.0): Deserialization of untrusted data in Microsoft Bing allows an unauthorized attacker to execute code over a network.
CVE-2026-20131 — Critical (CVSS 10.0): A vulnerability in the web-based management interface of Cisco Secure Firewall Management Center (FMC) Software could…
CVE-2026-25632 — Critical (CVSS 10.0): EPyT-Flow is a Python package designed for the easy generation of hydraulic and water quality scenario data of water…
CVE-2025-14931 — Critical (CVSS 10.0): Hugging Face smolagents Remote Python Executor Deserialization of Untrusted Data Remote Code Execution Vulnerability.…

Browse all CWE-502 (Deserialization of Untrusted Data) vulnerabilities →