CVE-2023-5391Network attack vector

Unauthenticated code execution via crafted packet deserialization

Published Oct 4, 2023 · Updated Feb 27, 2025

Untrusted deserialization in Distributed Data Systems EcoStruxure products allows remote attackers to execute arbitrary code via crafted packets. The vendor identifies deserialization of packet data as the unsafe operation but does not disclose the receiving component, data format, or deserializer. No credentials or user interaction are required, and successful exploitation executes attacker-controlled code on the targeted Windows server.

CVSS severity9.8
Critical
EPSS probability0.84%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Untrusted deserialization in Distributed Data Systems EcoStruxure products allows remote attackers to execute arbitrary code via crafted packets. The vendor identifies deserialization of packet data as the unsafe operation but does not disclose the receiving component, data format, or deserializer. No credentials or user interaction are required, and successful exploitation executes attacker-controlled code on the targeted Windows server.

The record

CVE
CVE-2023-5391
Published
Oct 4, 2023
Updated
Feb 27, 2025
Vendor
Distributed Data Systems
Product
EcoStruxure Power Monitoring Expert
Classifications
CWE-502, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 27, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All versions – prior to application of Hotfix-145271

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Distributed Data Systems · EcoStruxure Power Monitoring Expertversion=All versions – prior to application of Hotfix-145271
Distributed Data Systems · EcoStruxure Power Operation - Advanced Reporting and Dashboards Moduleversion=All versions – prior to application of Hotfix-145271
Distributed Data Systems · EcoStruxure Power SCADA Operation - Advanced Reporting and Dashboards Moduleversion=All versions – prior to application of Hotfix-145271

Published CVSS scores

9.8Schneider Electric SECVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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