CVE-2026-18871
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of service disruption.
- 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: 7.3 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.1% · EPSS, next 30 days
- Weakness
- CWE-121
- Record status
- Analyzed
Affected
- IBM Power System s1122 \(9824-22a\) Firmware < fw1110.31
- IBM Power System s1122 \(9824-22a\) Firmware fw1120.00
- IBM Power System s1124 \(9824-42a\) Firmware < fw1110.31
- IBM Power System s1124 \(9824-42a\) Firmware fw1120.00
- IBM Power System s1122s \(9824-22b\) Firmware < fw1110.31
- IBM Power System s1122s \(9824-22b\) Firmware fw1120.00
- IBM Power System s1114 \(9824-41b\) Firmware < fw1110.31
- IBM Power System s1114 \(9824-41b\) Firmware fw1120.00
Attack profile CVSS 3.1 · 7.3
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality
- None
- Integrity
- Low
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H
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-2026-18871.md and follow it. Check whether this project is affected by CVE-2026-18871. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
