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CVE-2026-18871

🗓️ 19 Aug 2026 20:17:13Reported by [email protected]Type 
nvd
 nvd🔗 web.nvd.nist.gov👁 8 Views

IBM PowerVM Hypervisor firmware configuration parsing allows authenticated attackers to crash the boot stack with possible memory corruption.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
ibm
IBM Security Bulletins		Security Bulletin: This Power System update is being released to address CVE-2026-18871
15 Aug 202617:30
–ibm
cve
CVE		CVE-2026-18871
19 Aug 202619:36
–cve
cvelist
Cvelist		CVE-2026-18871 Power System Buffer Overflow
19 Aug 202619:36
–cvelist
euvd
EUVD		EUVD-2026-62743
19 Aug 202619:36
–euvd
ptsecurity
Positive Technologies		PT-2026-78635
19 Aug 202600:00
–ptsecurity
vulnrichment
Vulnrichment		CVE-2026-18871 Power System Buffer Overflow
19 Aug 202619:36
–vulnrichment
NVD
Node
AND
OR
ibmpower_system_s1122_(9824-22a)_firmwareRangefw1110.00–fw1110.31
ibmpower_system_s1122_(9824-22a)_firmwareMatchfw1120.00
ibmpower_system_s1122_(9824-22a)Match-
Node
AND
OR
ibmpower_system_s1124_(9824-42a)_firmwareRangefw1110.00–fw1110.31
ibmpower_system_s1124_(9824-42a)_firmwareMatchfw1120.00
ibmpower_system_s1124_(9824-42a)Match-
Node
AND
OR
ibmpower_system_s1122s_(9824-22b)_firmwareRangefw1110.00–fw1110.31
ibmpower_system_s1122s_(9824-22b)_firmwareMatchfw1120.00
ibmpower_system_s1122s_(9824-22b)Match-
Node
AND
OR
ibmpower_system_s1114_(9824-41b)_firmwareRangefw1110.00–fw1110.31
ibmpower_system_s1114_(9824-41b)_firmwareMatchfw1120.00
ibmpower_system_s1114_(9824-41b)Match-
Node
AND
OR
ibmpower_system_l1122_(9856-22h)_firmwareRangefw1110.00–fw1110.31
ibmpower_system_l1122_(9856-22h)_firmwareMatchfw1120.00
ibmpower_system_l1122_(9856-22h)Match-
Node
AND
OR
ibmpower_system_l1124_(9856-42h)_firmwareRangefw1110.00–fw1110.31
ibmpower_system_l1124_(9856-42h)_firmwareMatchfw1120.00
ibmpower_system_l1124_(9856-42h)Match-
Node
AND
OR
ibmpower_system_e1150_(9043-mru)_firmwareRangefw1110.00–fw1110.31
ibmpower_system_e1150_(9043-mru)_firmwareMatchfw1120.00
ibmpower_system_e1150_(9043-mru)Match-
Node
AND
ibmpower_system_s1112_(9242-21b)_firmwareMatchfw1120.00
ibmpower_system_s1112_(9242-21b)Match-
Node
AND
ibmpower_system_s1112_(9242-21t)_firmwareMatchfw1120.00
ibmpower_system_s1112_(9242-21t)Match-
Node
AND
ibmpower_system_e1080_(9080-hex)_firmwareRangefw1060.00–fw1060.81
ibmpower_system_e1080_(9080-hex)Match-
Node
AND
ibmpower_system_s1022_(9105-22a)_firmwareRangefw1060.00–fw1060.81
ibmpower_system_s1022_(9105-22a)Match-
Node
AND
ibmpower_system_s1024_(9105-42a)_firmwareRangefw1060.00–fw1060.81
ibmpower_system_s1024_(9105-42a)Match-
Node
AND
ibmpower_system_s1022s_(9105-22b)_firmwareRangefw1060.00–fw1060.81
ibmpower_system_s1022s_(9105-22b)Match-
Node
AND
ibmpower_system_s1014_(9105-41b)_firmwareRangefw1060.00–fw1060.81
ibmpower_system_s1014_(9105-41b)Match-
Node
AND
ibmpower_system_l1022_(9786-22h)_firmwareRangefw1060.00–fw1060.81
ibmpower_system_l1022_(9786-22h)Match-
Node
AND
ibmpower_system_l1024_(9786-42h)_firmwareRangefw1060.00–fw1060.81
ibmpower_system_l1024_(9786-42h)Match-
Node
AND
ibmpower_system_e1050_(9043-mrx)_firmwareRangefw1060.00–fw1060.81
ibmpower_system_e1050_(9043-mrx)Match-
Node
AND
ibmpower_system_s1012_(9028-21b)_firmwareRangefw1060.00–fw1060.81
ibmpower_system_s1012_(9028-21b)Match-
Node
AND
OR
ibmpower_system_e1180_(9080-heu)_firmwareRangefw1110.00–fw1110.31
ibmpower_system_e1180_(9080-heu)_firmwareMatchfw1120.00
ibmpower_system_e1180_(9080-heu)Match-

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25 Aug 2026 20:39Current
CVSS 3.17.3
EPSS0.0011
CWE-121
IBM PowerVM Hypervisorfirmware configuration parsingmemory corruptionservice processor accessboot stack crashavailability impact
8