CVE-2018-1992

What it is

The IBM Power 9 OP910, OP920, and FW910 boot firmware's bootloader is responsible for loading and validating the initial boot firmware image that drives the rest of the system's hardware initialization. The bootloader firmware contains a buffer overflow vulnerability such that, if an attacker were able to replace the initial boot firmware image with a very carefully crafted and sufficiently large, malicious replacement, it could cause the bootloader, during the load of that image, to overwrite its own instruction memory and circumvent secure boot protections, install trojans, etc. IBM X-Force ID: 154345.

At a glance

Exploitability

Can be exploited locally on the machine with an admin-level account. High risk of data exposure, data tampering, service disruption.

Exploit odds

0.4% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2019-03-21 16:00 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 01:52 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.4% in the next 30 days (EPSS).
• Severity: 6.4 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2019-03-21 16:00 UTC

Last modified

2026-06-17 01:52 UTC

Exploit probability

0.4% · EPSS, next 30 days

Weakness

CWE-119 · Buffer errors

Record status

Modified

Affected

• IBM Power System s922 \(9009-22a\) Firmware < fw910.10
• IBM Power System h922 \(9223-22h\) Firmware < fw910.10
• IBM Power System s914 \(9009-41a\) Firmware < fw910.10
• IBM Power System s924 \(9009-42a\) Firmware < fw910.10
• IBM Power System h924 \(9223-42h\) Firmware < fw910.10
• IBM Power System l922 \(9008-22l\) Firmware < fw910.10
• IBM Power System ac922 \(8335-gtg\) Firmware < op910.30
• IBM Power System ac922 \(8335-gth\) Firmware < op920.10

Attack profile CVSS 3.0 · 6.4

Attack vector

Local

Complexity

High

Privileges needed

High

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

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-2018-1992.md and follow it. Check whether this project is affected by CVE-2018-1992. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

Copy as ticket · More options · Status badge