How severe is CVE-2021-38937?

CVE-2021-38937 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-38937 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-38937?

CVE-2021-38937 primarily affects Ibm Powervm Hypervisor. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-38937?

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

When was CVE-2021-38937 published?

CVE-2021-38937 was published on 2021-12-10 and last updated on 2026-06-17.

CVE-2021-38937

CVE-2021-38937 is a medium-severity vulnerability in Ibm Powervm Hypervisor with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 6.8
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ibm Powervm Hypervisor
Published: 2021-12-10
Last modified: 2026-06-17

Description

IBM PowerVM Hypervisor FW940, FW950, and FW1010 could allow an authenticated user to cause the system to crash using a specially crafted IBMi Hypervisor call. IBM X-Force ID: 210894.

Frequently asked questions

What is CVE-2021-38937?: IBM PowerVM Hypervisor FW940, FW950, and FW1010 could allow an authenticated user to cause the system to crash using a specially crafted IBMi Hypervisor call. IBM X-Force ID: 210894.
How severe is CVE-2021-38937?: CVE-2021-38937 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-38937 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-38937?: CVE-2021-38937 primarily affects Ibm Powervm Hypervisor. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-38937?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-38937 published?: CVE-2021-38937 was published on 2021-12-10 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:o:ibm:powervm_hypervisor:fw940:*:*:*:*:*:*:*
cpe:2.3:o:ibm:powervm_hypervisor:fw950:*:*:*:*:*:*:*
cpe:2.3:o:ibm:powervm_hypervisor:fw1010:*:*:*:*:*:*:*

More vulnerabilities in Ibm Powervm Hypervisor

CVE-2023-30438 — Critical (CVSS 9.3): An internally discovered vulnerability in PowerVM on IBM Power9 and Power10 systems could allow an attacker with…
CVE-2021-38917 — Critical (CVSS 9.1): IBM PowerVM Hypervisor FW860, FW940, and FW950 could allow an attacker that gains service access to the FSP can read…
CVE-2021-38918 — High (CVSS 7.5): IBM PowerVM Hypervisor FW860, FW940, FW950, and FW1010, through a specific sequence of VM management operations could…
CVE-2025-36035 — Medium (CVSS 6.7): IBM PowerVM Hypervisor FW950.00 through FW950.E0, FW1050.00 through FW1050.50, and FW1060.00 through FW1060.40 could…
CVE-2023-30440 — Medium (CVSS 6.7): IBM PowerVM Hypervisor FW860.00 through FW860.B3, FW950.00 through FW950.70, FW1010.00 through FW1010.50, FW1020.00…
CVE-2022-22445 — Medium (CVSS 6.5): An attacker that gains service access to the FSP (POWER9 only) or gains admin authority to a partition can compromise…

All CVEs affecting Ibm Powervm Hypervisor →