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Vulnerability record · CVE-2026-18857 · published 24 September 2026

CVE-2026-18857: Ibm power system s1122 \(9824-22a\) firmware out-of-bounds read vulnerability

Ibm · Power System S1122 \(9824 22a\) Firmware

IBM OPENBMC FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, and FW1060.00 through FW1060.81 is affected by a vulnerability in the BMC firmware management interface. The host system can cause the BMC firmware management service to crash or allow a limited amount of BMC internal memory to be read, resulting in a confidentiality and availability impact to the managed system.

3.4 CVSS 3.1 Low EPSS 0.11% · top 99.0% CWE-125 · Out-of-bounds read
3.4CVSS 3.1 base score
0.11%EPSS exploitation probability, 30 days
NoNot in CISA KEV
17Affected product versions listed by NVD
1References
30 Sep 2026Last modified by NVD

Description

IBM OPENBMC FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, and FW1060.00 through FW1060.81 is affected by a vulnerability in the BMC firmware management interface. The host system can cause the BMC firmware management service to crash or allow a limited amount of BMC internal memory to be read, resulting in a confidentiality and availability impact to the managed system.

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:L

Affected products

17 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.ibm.com/support/pages/node/7289253 PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2026-18821Ibm power system s1122 \(9824-22a\) firmware out-of-bounds write vulnerabilityIBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 Power Systems Firmware is a…EPSS 0.20%8.8CVE-2026-17414Ibm power system s1122 \(9824-22a\) firmware improper input validation vulnerabilityIBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 Power Systems Firmware is a…EPSS 0.19%8.8CVE-2026-7868Ibm power system s1122 \(9824-22a\) firmware incorrect authorization vulnerabilityIBM OPENBMC FW1110.00 through FW1110.20, and FW1060.00 through FW1060.71 allows ReadOnly users to escalate privileges and give themselves administrat…EPSS 0.37%8.4CVE-2026-17091Ibm power system s1122 \(9824-22a\) firmware integer overflow vulnerabilityIBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 is affected by a vulnerabil…EPSS 0.15%8.4CVE-2026-11885Ibm power system s1122 \(9824-22a\) firmware classic buffer overflow vulnerabilityIBM PowerVM Hypervisor FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H1 A carefully crafted OS hypervisor call…EPSS 0.15%8.2CVE-2026-16933Ibm power system s1122 \(9824-22a\) firmware integer overflow vulnerabilityIBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, FW950.00 through FW950.H2, OP940.00 through OP940.a1 …EPSS 0.17%8.2CVE-2026-16707Ibm power system s1122 \(9824-22a\) firmware out-of-bounds read vulnerabilityIBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 is affected by a vulnerabil…EPSS 0.17%8.2CVE-2026-16661Ibm power system s1122 \(9824-22a\) firmware integer overflow vulnerabilityIBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 is affected by a vulnerabil…EPSS 0.17%

Source: NIST National Vulnerability Database (record CVE-2026-18857), CISA KEV, FIRST EPSS (scores of 2026-09-30). This page is refreshed as NVD updates the record.