High Access control

CVE-2026-17429 — Power System Incorrect Authorization

IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, FW950.00 through FW950.H2, OP940.00 through OP940.a1 (Power9), and OP940.00 - OP940.81 (Power HMC) is affected by a vulnerability in the interface between the BMC/FSP and the host system. An attacker with service account or root access to the BMC/FSP can write arbitrary data to hardware control registers, allowing full control over the host system and all hosted partitions, resulting in a confidentiality, integrity, and availability impact.

Published Aug 19, 2026 · Updated Oct 15, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: ibm

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.2% (30-day exploitation probability)+1
Technical severity (high)+6

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.15%

ahead of 4% of scored CVEs · Oct 15, 2026

Affects

Ibm

Power Hardware Management Console (7063-cr2) Firmware and 29 more

CVSS base

8.1

High · 2 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

None

none · proof-of-concept · active

Automatable

can an attacker script the kill-chain steps

Technical impact

Partial

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Ibm Power Hardware Management Console (7063-cr2) Firmware, Ibm Power System Ac922 (8335-gth) Firmware, Ibm Power System Ac922 (8335-gtx) Firmware…).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes matching the vulnerability class (access control), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Ibm	Power Hardware Management Console (7063-cr2) Firmware	≥ op940 and < op940.82	Vulnerable	NIST National Vulnerability Database
Ibm	Power System Ac922 (8335-gth) Firmware	≥ op940 and < op940.a2	Vulnerable	NIST National Vulnerability Database
Ibm	Power System Ac922 (8335-gtx) Firmware	≥ op940 and < op940.a2	Vulnerable	NIST National Vulnerability Database
Ibm	Power System E1050 (9043-mrx) Firmware	≥ fw1060.00 and < fw1060.81	Vulnerable	NIST National Vulnerability Database
Ibm	Power System E1080 (9080-hex) Firmware	≥ fw1060.00 and < fw1060.81	Vulnerable	NIST National Vulnerability Database
Ibm	Power System E1150 (9043-mru) Firmware	version fw1120.00≥ fw1110.00 and < fw1110.31	Vulnerable	NIST National Vulnerability Database
Ibm	Power System E1180 (9080-heu) Firmware	version fw1120.00≥ fw1110.00 and < fw1110.31	Vulnerable	NIST National Vulnerability Database
Ibm	Power System E950 (9040-mr9) Firmware	≥ fw950.00 and < fw950.h3	Vulnerable	NIST National Vulnerability Database
Ibm	Power System E980 (9080-m9s) Firmware	≥ fw950.00 and < fw950.h3	Vulnerable	NIST National Vulnerability Database
Ibm	Power System H922 (9223-22s) Firmware	≥ fw950.00 and < fw950.h3	Vulnerable	NIST National Vulnerability Database
Ibm	Power System H924 (9223-42s) Firmware	≥ fw950.00 and < fw950.h3	Vulnerable	NIST National Vulnerability Database
Ibm	Power System L1022 (9786-22h) Firmware	≥ fw1060.00 and < fw1060.81	Vulnerable	NIST National Vulnerability Database
Ibm	Power System L1024 (9786-42h) Firmware	≥ fw1060.00 and < fw1060.81	Vulnerable	NIST National Vulnerability Database
Ibm	Power System L1122 (9856-22h) Firmware	≥ fw1110.00 and < fw1110.31version fw1120.00	Vulnerable	NIST National Vulnerability Database
Ibm	Power System L1124 (9856-42h) Firmware	≥ fw1110.00 and < fw1110.31version fw1120.00	Vulnerable	NIST National Vulnerability Database
Ibm	Power System S1012 (9028-21b) Firmware	≥ fw1060.00 and < fw1060.81	Vulnerable	NIST National Vulnerability Database
Ibm	Power System S1014 (9105-41b) Firmware	≥ fw1060.00 and < fw1060.81	Vulnerable	NIST National Vulnerability Database
Ibm	Power System S1022 (9105-22a) Firmware	≥ fw1060.00 and < fw1060.81	Vulnerable	NIST National Vulnerability Database
Ibm	Power System S1022s (9105-22b) Firmware	≥ fw1060.00 and < fw1060.81	Vulnerable	NIST National Vulnerability Database
Ibm	Power System S1024 (9105-42a) Firmware	≥ fw1060.00 and < fw1060.81	Vulnerable	NIST National Vulnerability Database
Ibm	Power System S1112 (9242-21b) Firmware	version fw1120.00	Vulnerable	NIST National Vulnerability Database
Ibm	Power System S1112 (9242-21t) Firmware	version fw1120.00	Vulnerable	NIST National Vulnerability Database
Ibm	Power System S1114 (9824-41b) Firmware	version fw1120.00≥ fw1110.00 and < fw1110.31	Vulnerable	NIST National Vulnerability Database
Ibm	Power System S1122 (9824-22a) Firmware	version fw1120.00≥ fw1110.00 and < fw1110.31	Vulnerable	NIST National Vulnerability Database
Ibm	Power System S1122s (9824-22b) Firmware	version fw1120.00≥ fw1110.00 and < fw1110.31	Vulnerable	NIST National Vulnerability Database
Ibm	Power System S1124 (9824-42a) Firmware	version fw1120.00≥ fw1110.00 and < fw1110.31	Vulnerable	NIST National Vulnerability Database
Ibm	Power System S914 (9009-41g) Firmware	≥ fw950.00 and < fw950.h3	Vulnerable	NIST National Vulnerability Database
Ibm	Power System S922 (9009-22g) Firmware	version fw950.h3≥ fw950.00 and < fw950.h3	Vulnerable	NIST National Vulnerability Database
Ibm	Power System S924 (9009-42g) Firmware	≥ fw950.00 and < fw950.h3	Vulnerable	NIST National Vulnerability Database
Ibm	Power Systems Firmware	version FW1120.00≥ FW1110.00 and ≤ FW1110.30≥ FW1060.00 and ≤ FW1060.80≥ FW950.00 and ≤ FW950.H2≥ OP940.00 and ≤ OP940.a1≥ OP940.00 and ≤ OP940.81	Vulnerable	CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Local

Attack complexity

Low

Privileges required

High

User interaction

None

Scope

Changed

Confidentiality

Low

Integrity

High

Availability

High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
8.1	CVSS 3.1	High	1.5	6.0	psirt@us.ibm.com via NIST National Vulnerability Database
8.1	CVSS 3.1	High	—	—	ibm via CVE Program (cve.org) e CISA ADP

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H (score shown at the top: psirt@us.ibm.com)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-863 · Incorrect Authorization

Other CVEs with this weakness →

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.
Audit administrative actions and access to resources outside each user’s normal pattern.

endpoint telemetry (EDR)authentication logsapplication logs

Timeline

What happened to this CVE, newest first.

2026
Affected products added · ibm/power systems firmware
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
SSVC assessment updated
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 15, 2026
CVSS changed · 8.1
Oct 15, 2026 · NIST National Vulnerability Database
Source status changed · → Analyzed
Oct 15, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 15, 2026 · NIST National Vulnerability Database
CVE published
Aug 19, 2026 · ibm

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

1 on the record

www.ibm.com/support/pages/node/7283218
Vendor Advisory, vendor-advisory, patch, NIST National Vulnerability Database

Elsewhere on this site

Ibm
every CVE for this vendor

Access control
same class

CWE-863
other pages naming this weakness

Related CVEs (same products)

High CVE-2026-93306 This Power System update is being released to address 20d
Low CVE-2026-19492 This Power System update is being released to address 21d
Medium CVE-2026-18870 This Power System update is being released to address 21d
Medium CVE-2026-17503 This Power System update is being released to address 21d
Medium CVE-2026-17504 This Power System update is being released to address 21d
Low CVE-2026-17511 This Power System update is being released to address 21d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No fixed version, patch or mitigation documented.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-17429 is "Power System Incorrect Authorization", rated High. It affects Power Hardware Management Console (7063-cr2) Firmware (Ibm); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 8.1 describes technical severity. EPSS 0.15% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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