How severe is CVE-2023-30440?

CVE-2023-30440 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability high.

Is CVE-2023-30440 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-30440?

CVE-2023-30440 affects Ibm Powervm Hypervisor. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-30440?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-30440 published?

CVE-2023-30440 was published on 2023-05-23 and last updated on 2026-06-17.

CVE-2023-30440

CVE-2023-30440 is a medium-severity vulnerability in Ibm Powervm Hypervisor with a CVSS 3.x base score of 6.7. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Ibm Powervm Hypervisor
Published: 2023-05-23
Last modified: 2026-06-17

Description

IBM PowerVM Hypervisor FW860.00 through FW860.B3, FW950.00 through FW950.70, FW1010.00 through FW1010.50, FW1020.00 through FW1020.30, and FW1030.00 through FW1030.10 could allow a local attacker with control a partition that has been assigned SRIOV virtual function (VF) to cause a denial of service to a peer partition or arbitrary data corruption. IBM X-Force ID: 253175.

Frequently asked questions

What is CVE-2023-30440?: IBM PowerVM Hypervisor FW860.00 through FW860.B3, FW950.00 through FW950.70, FW1010.00 through FW1010.50, FW1020.00 through FW1020.30, and FW1030.00 through FW1030.10 could allow a local attacker with control a partition that has been assigned SRIOV virtual function (VF) to cause a denial of service to a peer partition or arbitrary data corruption. IBM X-Force ID: 253175.
How severe is CVE-2023-30440?: CVE-2023-30440 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability high.
Is CVE-2023-30440 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-30440?: CVE-2023-30440 affects Ibm Powervm Hypervisor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-30440?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-30440 published?: CVE-2023-30440 was published on 2023-05-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:ibm:powervm_hypervisor:*:*:*:*:*:*:*:*

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