CVE-2023-30440

IBM PowerVM Hypervisor denial of service

HIGH
7.9
CVSS Score
Published: May 23, 2023 at 01:20 PM UTC
Updated: June 17, 2026 at 05:54 AM UTC
1 product affected across 1 vendorPowerVM Hypervisor

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Severity
HIGH7.9
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

FW1010.00 ≤ v ≤ FW1010.50FW1020.00 ≤ v ≤ FW1020.30FW1030.00 ≤ v ≤ FW1030.10FW860.00 ≤ v ≤ FW860.B3FW950.00 ≤ v ≤ FW950.70fw1010 ≤ v ≤ fw1010.50fw1020.00 ≤ v ≤ fw1020.30fw1030.00 ≤ v ≤ fw1030.10fw860 ≤ v ≤ fw860.b3fw950 ≤ v ≤ fw950.70FW1010.00FW1020.00FW1030.00FW860.00FW950.00

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
LOW
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20

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