All vulnerabilities
CVE-2026-17503

PowerVM Hypervisor: This Power System update is being released to address

IBM PowerVM HypervisorContainers & cloud
Open in ThreatlineRecord JSON
CVSS
5.1Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.10%Chance of exploitation activity in the next 30 days, higher than 1% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published24 Sep 2026Updated 24 Sep 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Description

IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, FW1060.00 through FW1060.81, and FW950.00 through FW950.H3 is affected by a vulnerability in the partition firmware runtime boot configuration. An attacker with root access to a partition can maliciously alter partition nvram, causing the partition to fail to boot. This condition persists until operator intervention — deleting and recreating the partition configuration — to restore normal operation. Successful exploitation results in an integrity and availability impact.

Text from CVE List

Affected versions 4

  • PowerVM Hypervisoraffected: FW1120.00 through FW1120.01CVE List
  • PowerVM Hypervisoraffected: FW1110.00 through FW1110.31CVE List
  • PowerVM Hypervisoraffected: FW1060.00 through FW1060.81CVE List
  • PowerVM Hypervisoraffected: FW950.00 through FW950.H3CVE List

References 1