How severe is CVE-2023-31222?

CVE-2023-31222 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-2023-31222 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 28% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-31222?

CVE-2023-31222 affects Medtronic Paceart Optima. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-31222?

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-2023-31222 published?

CVE-2023-31222 was published on 2023-06-29 and last updated on 2026-06-17.

CVE-2023-31222

CVE-2023-31222 is a critical-severity vulnerability in Medtronic Paceart Optima with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 28% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 28% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Medtronic Paceart Optima
Published: 2023-06-29
Last modified: 2026-06-17

Description

Deserialization of untrusted data in Microsoft Messaging Queuing Service in Medtronic's Paceart Optima versions 1.11 and earlier on Windows allows an unauthorized user to impact a healthcare delivery organization’s Paceart Optima system cardiac device causing data to be deleted, stolen, or modified, or the Paceart Optima system being used for further network penetration via network connectivity.

Frequently asked questions

What is CVE-2023-31222?: Deserialization of untrusted data in Microsoft Messaging Queuing Service in Medtronic's Paceart Optima versions 1.11 and earlier on Windows allows an unauthorized user to impact a healthcare delivery organization’s Paceart Optima system cardiac device causing data to be deleted, stolen, or modified, or the Paceart Optima system being used for further network penetration via network connectivity.
How severe is CVE-2023-31222?: CVE-2023-31222 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-2023-31222 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 28% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-31222?: CVE-2023-31222 affects Medtronic Paceart Optima. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-31222?: 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-2023-31222 published?: CVE-2023-31222 was published on 2023-06-29 and last updated on 2026-06-17.

References

https://global.medtronic.com/xg-en/product-security/security-bulletins/paceart-optima-system.html

Affected products (1)

cpe:2.3:a:medtronic:paceart_optima:*:*:*:*:*:windows:*:*

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