What is CVE-2026-19492?

CVE-2026-19492 is a low-severity vulnerability in IBM Power System E1050 \(9043-Mrx\) Firmware, classified under CWE-457. CVSS score: 3.2/10. Published 2026-09-24.

How severe is CVE-2026-19492?

Low severity. CVSS v3 base score is 3.2 out of 10.

Vulnerability in IBM Power System E1050 \(9043-Mrx\) Firmware

CVE-2026-19492

IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, and FW1060.00 through FW1060.81 is affected by a vulnerability in a hypervisor call interface. An attacker with root access to a guest partition can read a limited amount of hypervisor memory, potentially exposing sensitive data belonging to the hypervisor or other guest partitions hosted on the same system, resulting in a confidentiality impact. The attacker has no control over which memory contents are returned. This vulnerability is of particular concern in multi-tenant environments where guests may run arbitrary OS images.

Published 2026-09-24 · last modified 2026-09-30.

CVSS v3 metric

CVSS v3 base score 3.2 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.001 (1.6th percentile), scored 2026-11-09.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 1.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-457

References

www.ibm.com/support/pages/node/7289137 (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-19492?: CVE-2026-19492 is a low-severity vulnerability in IBM Power System E1050 \(9043-Mrx\) Firmware, classified under CWE-457. CVSS score: 3.2/10. Published 2026-09-24.
How severe is CVE-2026-19492?: Low severity. CVSS v3 base score is 3.2 out of 10.