CVE-2025-36255Network attack vector

Authenticated privilege escalation via unsafe role assignment

Published Aug 19, 2026 · Updated Aug 20, 2026

Privilege escalation in affected IBM DS8A00 and DS8900F HMC firmware allows remote authenticated users to create privileged accounts. The HMC user-management logic permits an authenticated account to assign unsafe privileged roles when creating another user. Access requires prior authentication through client-controlled infrastructure; the resulting account gains privileged HMC capabilities, but the HMC stores no customer data.

CVSS severity7.5
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in affected IBM DS8A00 and DS8900F HMC firmware allows remote authenticated users to create privileged accounts. The HMC user-management logic permits an authenticated account to assign unsafe privileged roles when creating another user. Access requires prior authentication through client-controlled infrastructure; the resulting account gains privileged HMC capabilities, but the HMC stores no customer data.

The record

CVE
CVE-2025-36255
Published
Aug 19, 2026
Updated
Aug 20, 2026
Vendor
IBM
Product
DS8A00
Classifications
CWE-267, T1136.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.1.3.0 <=10.11.35.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · DS8A00version=10.1.3.0 <=10.11.35.0
IBM · DS8900Fversion=89.40.83.0 <=89.44.25.0

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.5IBMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-267Privilege Defined With Unsafe Actions
T1136.001Create Account: Local Account

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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