IBM PowerVM Hypervisor FW860, FW940, FW950, and FW1010, through a specific sequence of VM…
Priority LOW 35Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
IBM PowerVM Hypervisor FW860, FW940, FW950, and FW1010, through a specific sequence of VM management operations could lead to a violation of the isolation between peer VMs. IBM X-Force ID: 210019.
Why it matters now
EPSS 0.0125 69th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| IBM | PowerVM Hypervisor | FW940; FW950; FW860; FW1010 | — | No fix listed | CNA |
- PowerVM Hypervisor VendorIBM Affected FW940; FW950; FW860; FW1010 Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:ibm:powervm_hypervisor:fw860:*:*:*:*:*:*:* | fw860 | Vulnerable | IBM |
| cpe:2.3:o:ibm:powervm_hypervisor:fw940:*:*:*:*:*:*:* | fw940 | Vulnerable | IBM |
| cpe:2.3:o:ibm:powervm_hypervisor:fw950:*:*:*:*:*:*:* | fw950 | Vulnerable | IBM |
| cpe:2.3:o:ibm:powervm_hypervisor:fw1010:*:*:*:*:*:*:* | fw1010 | Vulnerable | IBM |
- cpe:2.3:o:ibm:powervm_hypervisor:fw860:*:*:*:*:*:*:* Versions fw860 Vulnerable ·IBM
- cpe:2.3:o:ibm:powervm_hypervisor:fw940:*:*:*:*:*:*:* Versions fw940 Vulnerable ·IBM
- cpe:2.3:o:ibm:powervm_hypervisor:fw950:*:*:*:*:*:*:* Versions fw950 Vulnerable ·IBM
- cpe:2.3:o:ibm:powervm_hypervisor:fw1010:*:*:*:*:*:*:* Versions fw1010 Vulnerable ·IBM
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-38918
- 2026-10-03 Alias added: GHSA-m8m5-5pw5-3xr7
References
More IBM Powervm Hypervisor vulnerabilities
- TI-2022-15241 IBM Power FW security bypass CVSS 3.1CRITICAL 9.8
- TI-2023-14280 IBM PowerVM gain access CVSS 3.1CRITICAL 9.3
- TI-2021-16362 IBM PowerVM Hypervisor FW860, FW940, and FW950 could allow an attacker that gains service… CVSS 3.1CRITICAL 9.1
- TI-2023-14281 IBM PowerVM Hypervisor denial of service CVSS 3.1HIGH 7.9
- TI-2023-10961 IBM PowerVM Hypervisor information disclosure CVSS 3.1HIGH 7.5
- TI-2021-16379 IBM PowerVM Hypervisor FW940, FW950, and FW1010 could allow an authenticated user to… CVSS 3.1MEDIUM 6.5
Sources
- CVE-2021-38918 · CVE Program
- CVE-2021-38918 · NVD
- FIRST EPSS
- GHSA-m8m5-5pw5-3xr7 · GitHub Advisory Database · CC BY 4.0
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