TI-2026-15441 Aliases CVE-2026-18871 GHSA-28wc-xwjr-q8gm

Power System Buffer Overflow

LOW 31CWE-121Published 2026-08-19 · Updated 2026-08-20

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · Low · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, and FW1060.00 through FW1060.80 is affected by a vulnerability in host firmware configuration parsing. An attacker with authenticated service-level access to the service processor can write specially crafted configuration data, causing the host firmware boot stack to crash with possible memory corruption during system initialisation, resulting in an integrity and availability impact to the managed system.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0014 3rd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
IBM	PowerVM Hypervisor	FW1120.00; FW1110.00 – FW1110.30; FW1060.00 – FW1060.80	—	No fix listed	CNA

PowerVM Hypervisor VendorIBM Affected FW1120.00; FW1110.00 – FW1110.30; FW1060.00 – FW1060.80 Fixed in — No fix listed CNA

CPE configurations NVD · 46

CPE	Versions	Role	Vendor
cpe:2.3:o:ibm:power_system_s1122_\(9824-22a\)_firmware::::::::	fw1110.00 to before fw1110.31	Vulnerable	IBM
cpe:2.3:o:ibm:power_system_s1122_\(9824-22a\)_firmware:fw1120.00:::::::*	fw1120.00	Vulnerable	IBM
cpe:2.3:h:ibm:power_system_s1122_\(9824-22a\):-:::::::*	not specified by NVD	Running on	IBM
cpe:2.3:o:ibm:power_system_s1124_\(9824-42a\)_firmware::::::::	fw1110.00 to before fw1110.31	Vulnerable	IBM
cpe:2.3:o:ibm:power_system_s1124_\(9824-42a\)_firmware:fw1120.00:::::::*	fw1120.00	Vulnerable	IBM
cpe:2.3:h:ibm:power_system_s1124_\(9824-42a\):-:::::::*	not specified by NVD	Running on	IBM
cpe:2.3:o:ibm:power_system_s1122s_\(9824-22b\)_firmware::::::::	fw1110.00 to before fw1110.31	Vulnerable	IBM
cpe:2.3:o:ibm:power_system_s1122s_\(9824-22b\)_firmware:fw1120.00:::::::*	fw1120.00	Vulnerable	IBM
cpe:2.3:h:ibm:power_system_s1122s_\(9824-22b\):-:::::::*	not specified by NVD	Running on	IBM
cpe:2.3:o:ibm:power_system_s1114_\(9824-41b\)_firmware::::::::	fw1110.00 to before fw1110.31	Vulnerable	IBM

cpe:2.3:o:ibm:power_system_s1122_\(9824-22a\)_firmware:*:*:*:*:*:*:*:* Versions fw1110.00 to before fw1110.31 Vulnerable ·IBM
cpe:2.3:o:ibm:power_system_s1122_\(9824-22a\)_firmware:fw1120.00:*:*:*:*:*:*:* Versions fw1120.00 Vulnerable ·IBM
cpe:2.3:h:ibm:power_system_s1122_\(9824-22a\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
cpe:2.3:o:ibm:power_system_s1124_\(9824-42a\)_firmware:*:*:*:*:*:*:*:* Versions fw1110.00 to before fw1110.31 Vulnerable ·IBM
cpe:2.3:o:ibm:power_system_s1124_\(9824-42a\)_firmware:fw1120.00:*:*:*:*:*:*:* Versions fw1120.00 Vulnerable ·IBM
cpe:2.3:h:ibm:power_system_s1124_\(9824-42a\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
cpe:2.3:o:ibm:power_system_s1122s_\(9824-22b\)_firmware:*:*:*:*:*:*:*:* Versions fw1110.00 to before fw1110.31 Vulnerable ·IBM
cpe:2.3:o:ibm:power_system_s1122s_\(9824-22b\)_firmware:fw1120.00:*:*:*:*:*:*:* Versions fw1120.00 Vulnerable ·IBM
cpe:2.3:h:ibm:power_system_s1122s_\(9824-22b\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
cpe:2.3:o:ibm:power_system_s1114_\(9824-41b\)_firmware:*:*:*:*:*:*:*:* Versions fw1110.00 to before fw1110.31 Vulnerable ·IBM

Show 36 more CPE

CPE	Versions	Role	Vendor
cpe:2.3:o:ibm:power_system_s1114_\(9824-41b\)_firmware:fw1120.00:::::::*	fw1120.00	Vulnerable	IBM
cpe:2.3:h:ibm:power_system_s1114_\(9824-41b\):-:::::::*	not specified by NVD	Running on	IBM
cpe:2.3:o:ibm:power_system_l1122_\(9856-22h\)_firmware::::::::	fw1110.00 to before fw1110.31	Vulnerable	IBM
cpe:2.3:o:ibm:power_system_l1122_\(9856-22h\)_firmware:fw1120.00:::::::*	fw1120.00	Vulnerable	IBM
cpe:2.3:h:ibm:power_system_l1122_\(9856-22h\):-:::::::*	not specified by NVD	Running on	IBM
cpe:2.3:o:ibm:power_system_l1124_\(9856-42h\)_firmware::::::::	fw1110.00 to before fw1110.31	Vulnerable	IBM
cpe:2.3:o:ibm:power_system_l1124_\(9856-42h\)_firmware:fw1120.00:::::::*	fw1120.00	Vulnerable	IBM
cpe:2.3:h:ibm:power_system_l1124_\(9856-42h\):-:::::::*	not specified by NVD	Running on	IBM
cpe:2.3:o:ibm:power_system_e1150_\(9043-mru\)_firmware::::::::	fw1110.00 to before fw1110.31	Vulnerable	IBM
cpe:2.3:o:ibm:power_system_e1150_\(9043-mru\)_firmware:fw1120.00:::::::*	fw1120.00	Vulnerable	IBM
cpe:2.3:h:ibm:power_system_e1150_\(9043-mru\):-:::::::*	not specified by NVD	Running on	IBM
cpe:2.3:o:ibm:power_system_s1112_\(9242-21b\)_firmware:fw1120.00:::::::*	fw1120.00	Vulnerable	IBM
cpe:2.3:h:ibm:power_system_s1112_\(9242-21b\):-:::::::*	not specified by NVD	Running on	IBM
cpe:2.3:o:ibm:power_system_s1112_\(9242-21t\)_firmware:fw1120.00:::::::*	fw1120.00	Vulnerable	IBM
cpe:2.3:h:ibm:power_system_s1112_\(9242-21t\):-:::::::*	not specified by NVD	Running on	IBM
cpe:2.3:o:ibm:power_system_e1080_\(9080-hex\)_firmware::::::::	fw1060.00 to before fw1060.81	Vulnerable	IBM
cpe:2.3:h:ibm:power_system_e1080_\(9080-hex\):-:::::::*	not specified by NVD	Running on	IBM
cpe:2.3:o:ibm:power_system_s1022_\(9105-22a\)_firmware::::::::	fw1060.00 to before fw1060.81	Vulnerable	IBM
cpe:2.3:h:ibm:power_system_s1022_\(9105-22a\):-:::::::*	not specified by NVD	Running on	IBM
cpe:2.3:o:ibm:power_system_s1024_\(9105-42a\)_firmware::::::::	fw1060.00 to before fw1060.81	Vulnerable	IBM
cpe:2.3:h:ibm:power_system_s1024_\(9105-42a\):-:::::::*	not specified by NVD	Running on	IBM
cpe:2.3:o:ibm:power_system_s1022s_\(9105-22b\)_firmware::::::::	fw1060.00 to before fw1060.81	Vulnerable	IBM
cpe:2.3:h:ibm:power_system_s1022s_\(9105-22b\):-:::::::*	not specified by NVD	Running on	IBM
cpe:2.3:o:ibm:power_system_s1014_\(9105-41b\)_firmware::::::::	fw1060.00 to before fw1060.81	Vulnerable	IBM
cpe:2.3:h:ibm:power_system_s1014_\(9105-41b\):-:::::::*	not specified by NVD	Running on	IBM
cpe:2.3:o:ibm:power_system_l1022_\(9786-22h\)_firmware::::::::	fw1060.00 to before fw1060.81	Vulnerable	IBM
cpe:2.3:h:ibm:power_system_l1022_\(9786-22h\):-:::::::*	not specified by NVD	Running on	IBM
cpe:2.3:o:ibm:power_system_l1024_\(9786-42h\)_firmware::::::::	fw1060.00 to before fw1060.81	Vulnerable	IBM
cpe:2.3:h:ibm:power_system_l1024_\(9786-42h\):-:::::::*	not specified by NVD	Running on	IBM
cpe:2.3:o:ibm:power_system_e1050_\(9043-mrx\)_firmware::::::::	fw1060.00 to before fw1060.81	Vulnerable	IBM
cpe:2.3:h:ibm:power_system_e1050_\(9043-mrx\):-:::::::*	not specified by NVD	Running on	IBM
cpe:2.3:o:ibm:power_system_s1012_\(9028-21b\)_firmware::::::::	fw1060.00 to before fw1060.81	Vulnerable	IBM
cpe:2.3:h:ibm:power_system_s1012_\(9028-21b\):-:::::::*	not specified by NVD	Running on	IBM
cpe:2.3:o:ibm:power_system_e1180_\(9080-heu\)_firmware::::::::	fw1110.00 to before fw1110.31	Vulnerable	IBM
cpe:2.3:o:ibm:power_system_e1180_\(9080-heu\)_firmware:fw1120.00:::::::*	fw1120.00	Vulnerable	IBM
cpe:2.3:h:ibm:power_system_e1180_\(9080-heu\):-:::::::*	not specified by NVD	Running on	IBM

cpe:2.3:o:ibm:power_system_s1114_\(9824-41b\)_firmware:fw1120.00:*:*:*:*:*:*:* Versions fw1120.00 Vulnerable ·IBM
cpe:2.3:h:ibm:power_system_s1114_\(9824-41b\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
cpe:2.3:o:ibm:power_system_l1122_\(9856-22h\)_firmware:*:*:*:*:*:*:*:* Versions fw1110.00 to before fw1110.31 Vulnerable ·IBM
cpe:2.3:o:ibm:power_system_l1122_\(9856-22h\)_firmware:fw1120.00:*:*:*:*:*:*:* Versions fw1120.00 Vulnerable ·IBM
cpe:2.3:h:ibm:power_system_l1122_\(9856-22h\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
cpe:2.3:o:ibm:power_system_l1124_\(9856-42h\)_firmware:*:*:*:*:*:*:*:* Versions fw1110.00 to before fw1110.31 Vulnerable ·IBM
cpe:2.3:o:ibm:power_system_l1124_\(9856-42h\)_firmware:fw1120.00:*:*:*:*:*:*:* Versions fw1120.00 Vulnerable ·IBM
cpe:2.3:h:ibm:power_system_l1124_\(9856-42h\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
cpe:2.3:o:ibm:power_system_e1150_\(9043-mru\)_firmware:*:*:*:*:*:*:*:* Versions fw1110.00 to before fw1110.31 Vulnerable ·IBM
cpe:2.3:o:ibm:power_system_e1150_\(9043-mru\)_firmware:fw1120.00:*:*:*:*:*:*:* Versions fw1120.00 Vulnerable ·IBM
cpe:2.3:h:ibm:power_system_e1150_\(9043-mru\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
cpe:2.3:o:ibm:power_system_s1112_\(9242-21b\)_firmware:fw1120.00:*:*:*:*:*:*:* Versions fw1120.00 Vulnerable ·IBM
cpe:2.3:h:ibm:power_system_s1112_\(9242-21b\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
cpe:2.3:o:ibm:power_system_s1112_\(9242-21t\)_firmware:fw1120.00:*:*:*:*:*:*:* Versions fw1120.00 Vulnerable ·IBM
cpe:2.3:h:ibm:power_system_s1112_\(9242-21t\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
cpe:2.3:o:ibm:power_system_e1080_\(9080-hex\)_firmware:*:*:*:*:*:*:*:* Versions fw1060.00 to before fw1060.81 Vulnerable ·IBM
cpe:2.3:h:ibm:power_system_e1080_\(9080-hex\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
cpe:2.3:o:ibm:power_system_s1022_\(9105-22a\)_firmware:*:*:*:*:*:*:*:* Versions fw1060.00 to before fw1060.81 Vulnerable ·IBM
cpe:2.3:h:ibm:power_system_s1022_\(9105-22a\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
cpe:2.3:o:ibm:power_system_s1024_\(9105-42a\)_firmware:*:*:*:*:*:*:*:* Versions fw1060.00 to before fw1060.81 Vulnerable ·IBM
cpe:2.3:h:ibm:power_system_s1024_\(9105-42a\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
cpe:2.3:o:ibm:power_system_s1022s_\(9105-22b\)_firmware:*:*:*:*:*:*:*:* Versions fw1060.00 to before fw1060.81 Vulnerable ·IBM
cpe:2.3:h:ibm:power_system_s1022s_\(9105-22b\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
cpe:2.3:o:ibm:power_system_s1014_\(9105-41b\)_firmware:*:*:*:*:*:*:*:* Versions fw1060.00 to before fw1060.81 Vulnerable ·IBM
cpe:2.3:h:ibm:power_system_s1014_\(9105-41b\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
cpe:2.3:o:ibm:power_system_l1022_\(9786-22h\)_firmware:*:*:*:*:*:*:*:* Versions fw1060.00 to before fw1060.81 Vulnerable ·IBM
cpe:2.3:h:ibm:power_system_l1022_\(9786-22h\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
cpe:2.3:o:ibm:power_system_l1024_\(9786-42h\)_firmware:*:*:*:*:*:*:*:* Versions fw1060.00 to before fw1060.81 Vulnerable ·IBM
cpe:2.3:h:ibm:power_system_l1024_\(9786-42h\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
cpe:2.3:o:ibm:power_system_e1050_\(9043-mrx\)_firmware:*:*:*:*:*:*:*:* Versions fw1060.00 to before fw1060.81 Vulnerable ·IBM
cpe:2.3:h:ibm:power_system_e1050_\(9043-mrx\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
cpe:2.3:o:ibm:power_system_s1012_\(9028-21b\)_firmware:*:*:*:*:*:*:*:* Versions fw1060.00 to before fw1060.81 Vulnerable ·IBM
cpe:2.3:h:ibm:power_system_s1012_\(9028-21b\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
cpe:2.3:o:ibm:power_system_e1180_\(9080-heu\)_firmware:*:*:*:*:*:*:*:* Versions fw1110.00 to before fw1110.31 Vulnerable ·IBM
cpe:2.3:o:ibm:power_system_e1180_\(9080-heu\)_firmware:fw1120.00:*:*:*:*:*:*:* Versions fw1120.00 Vulnerable ·IBM
cpe:2.3:h:ibm:power_system_e1180_\(9080-heu\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-18871
2026-10-03 Alias added: GHSA-28wc-xwjr-q8gm

References

Patch 1

https://www.ibm.com/support/pages/node/7283238

TI-2026-15412 Power System Out-of-bounds Write CVSS 3.1HIGH 8.8
TI-2026-14313 Power System Improper Input Validation CVSS 3.1HIGH 8.8
TI-2026-06926 This Power System update is being released to address incorrect authorization CVSS 3.1HIGH 8.8
TI-2026-15705 Power System Buffer Overflow CVSS 3.1HIGH 8.2
TI-2026-14226 Power System Out-of-bounds Write CVSS 3.1HIGH 8.2
TI-2026-14221 Power System Buffer Overflow CVSS 3.1HIGH 8.2

See all 31 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences