CVE-2023-31222Network attack vector

Remote code execution via crafted MSMQ messages

Published Jun 29, 2023 · Updated Nov 26, 2024

Deserialization in Medtronic Paceart Optima 1.11 and earlier allows remote attackers to execute code or interrupt service via crafted MSMQ messages. The optional Paceart Messaging Service unsafely deserializes crafted messages in its Microsoft Message Queuing implementation. The service is disabled by default; when enabled, exploitation can expose, alter, or delete cardiac-device data, make the system unresponsive, or support further network penetration.

CVSS severity9.8
Critical
EPSS probability28.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization in Medtronic Paceart Optima 1.11 and earlier allows remote attackers to execute code or interrupt service via crafted MSMQ messages. The optional Paceart Messaging Service unsafely deserializes crafted messages in its Microsoft Message Queuing implementation. The service is disabled by default; when enabled, exploitation can expose, alter, or delete cardiac-device data, make the system unresponsive, or support further network penetration.

The record

CVE
CVE-2023-31222
Published
Jun 29, 2023
Updated
Nov 26, 2024
Vendor
Medtronic
Product
Paceart Optima
Classifications
CWE-502, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 29, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 26, 2024Record 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=Versions 1.11 and earlier

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Medtronic · Paceart Optimaversion=Versions 1.11 and earlier

Published CVSS scores

9.8MedtronicCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/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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