CVE-2026-4936
What it is
IBM PowerVM Hypervisor Platform KeyStore (PKS) and virtual TPM FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H2 use persistent storage key seeds that result in an AES key with reduced strength. An attacker with access to the service processor or HMC could exploit this weakness to derive the encryption key and access the data.
At a glance
- Exploitability
- Can be exploited from the same network segment with an admin-level account, but needs a user to act. High risk of data exposure.
- Exploit odds
- 0.1% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.1% in the next 30 days (EPSS).
- Severity: 5.1 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.1% · EPSS, next 30 days
- Weakness
- CWE-331
- Record status
- Analyzed
Affected
- IBM Power System s1122 \(9824-22a\) Firmware < fw1110.30
- IBM Power System s1122 \(9824-22a\) Firmware fw1120.00
- IBM Power System s1124 \(9824-42a\) Firmware < fw1110.30
- IBM Power System s1124 \(9824-42a\) Firmware fw1120.00
- IBM Power System s1122s \(9824-22b\) Firmware < fw1110.30
- IBM Power System s1122s \(9824-22b\) Firmware fw1120.00
- IBM Power System s1114 \(9824-41b\) Firmware < fw1110.30
- IBM Power System s1114 \(9824-41b\) Firmware fw1120.00
Attack profile CVSS 3.1 · 5.1
- Attack vector
- Adjacent network
- Complexity
- High
- Privileges needed
- High
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Raw vector
CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:C/C:H/I:N/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-4936.md and follow it. Check whether this project is affected by CVE-2026-4936. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
