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Fencer Vulns
medium 4.3

CVE-2026-18870 json

This Power System update is being released to address

published 2026-09-24 46 d ago modified 2026-09-30 39 d ago also EUVD-2026-86006

cvss
4.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 8%
public exploits
0
none known

Summary

IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, FW1060.00 through FW1060.81, and FW950.00 through FW950.H3 could allow a remote attacker to obtain sensitive information due to an out-of-bounds read.

Patch / fix

  • ibm power_system_s1122_(9824-22a)_firmware fw1110.32, fw1120.02
  • ibm power_system_s1124_(9824-42a)_firmware fw1110.32, fw1120.02
  • ibm power_system_s1122s_(9824-22b)_firmware fw1110.32, fw1120.02
  • ibm power_system_s1114_(9824-41b)_firmware fw1110.32, fw1120.02
  • ibm power_system_l1122_(9856-22h)_firmware fw1110.32, fw1120.02
  • ibm power_system_l1124_(9856-42h)_firmware fw1110.32, fw1120.02
  • ibm power_system_e1150_(9043-mru)_firmware fw1110.32, fw1120.02
  • ibm power_system_s1112_(9242-21b)_firmware fw1120.02
  • ibm power_system_s1112_(9242-21t)_firmware fw1120.02
  • ibm power_system_e1080_(9080-hex)_firmware fw1060.82
  • ibm power_system_s1022_(9105-22a)_firmware fw1060.82
  • ibm power_system_s1024_(9105-42a)_firmware fw1060.82
  • ibm power_system_s1022s_(9105-22b)_firmware fw1060.82
  • ibm power_system_s1014_(9105-41b)_firmware fw1060.82
  • ibm power_system_l1022_(9786-22h)_firmware fw1060.82
  • ibm power_system_l1024_(9786-42h)_firmware fw1060.82
  • ibm power_system_e1050_(9043-mrx)_firmware fw1060.82
  • ibm power_system_s1012_(9028-21b)_firmware fw1060.82
  • ibm power_system_e1180_(9080-heu)_firmware fw1110.32, fw1120.02
  • ibm power_system_s922_(9009-22g)_firmware fw950.h4

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
46 d ago

Exploit prediction

0.18% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.3 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 3.1 4.3 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

  • IBM PowerVM Hypervisor

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.