CVE-2026-18870
MEDIUMCVSS 4.3/10EPSS 0.18%
Last modified
CVE-2026-18870 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, FW1060.00 through FW1060.81, and FW950.00 through FW950.H3 could allow a remote attacker to obtain sensitive information due to an out-of-bounds read.. EPSS estimates a 0.18% chance of exploitation in the next 30 days.
Description
IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, FW1060.00 through FW1060.81, and FW950.00 through FW950.H3 could allow a remote attacker to obtain sensitive information due to an out-of-bounds read.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ibm | Power System S1122 \(9824-22a\) Firmware | >= fw1110.00, < fw1110.32 |
| Ibm | Power System S1122 \(9824-22a\) Firmware | >= fw1120.00, < fw1120.02 |
| Ibm | Power System S1124 \(9824-42a\) Firmware | >= fw1110.00, < fw1110.32 |
| Ibm | Power System S1124 \(9824-42a\) Firmware | >= fw1120.00, < fw1120.02 |
| Ibm | Power System S1122s \(9824-22b\) Firmware | >= fw1110.00, < fw1110.32 |
| Ibm | Power System S1122s \(9824-22b\) Firmware | >= fw1120.00, < fw1120.02 |
| Ibm | Power System S1114 \(9824-41b\) Firmware | >= fw1110.00, < fw1110.32 |
| Ibm | Power System S1114 \(9824-41b\) Firmware | >= fw1120.00, < fw1120.02 |
| Ibm | Power System L1122 \(9856-22h\) Firmware | >= fw1110.00, < fw1110.32 |
| Ibm | Power System L1122 \(9856-22h\) Firmware | >= fw1120.00, < fw1120.02 |
| Ibm | Power System L1124 \(9856-42h\) Firmware | >= fw1110.00, < fw1110.32 |
| Ibm | Power System L1124 \(9856-42h\) Firmware | >= fw1120.00, < fw1120.02 |
| Ibm | Power System E1150 \(9043-Mru\) Firmware | >= fw1110.00, < fw1110.32 |
| Ibm | Power System E1150 \(9043-Mru\) Firmware | >= fw1120.00, < fw1120.02 |
| Ibm | Power System S1112 \(9242-21b\) Firmware | >= fw1120.00, < fw1120.02 |
| Ibm | Power System S1112 \(9242-21t\) Firmware | >= fw1120.00, < fw1120.02 |
| Ibm | Power System E1080 \(9080-Hex\) Firmware | >= fw1060.00, < fw1060.82 |
| Ibm | Power System S1022 \(9105-22a\) Firmware | >= fw1060.00, < fw1060.82 |
| Ibm | Power System S1024 \(9105-42a\) Firmware | >= fw1060.00, < fw1060.82 |
| Ibm | Power System S1022s \(9105-22b\) Firmware | >= fw1060.00, < fw1060.82 |
| Ibm | Power System S1014 \(9105-41b\) Firmware | >= fw1060.00, < fw1060.82 |
| Ibm | Power System L1022 \(9786-22h\) Firmware | >= fw1060.00, < fw1060.82 |
| Ibm | Power System L1024 \(9786-42h\) Firmware | >= fw1060.00, < fw1060.82 |
| Ibm | Power System E1050 \(9043-Mrx\) Firmware | >= fw1060.00, < fw1060.82 |
| Ibm | Power System S1012 \(9028-21b\) Firmware | >= fw1060.00, < fw1060.82 |
| Ibm | Power System E1180 \(9080-Heu\) Firmware | >= fw1110.00, < fw1110.32 |
| Ibm | Power System E1180 \(9080-Heu\) Firmware | >= fw1120.00, < fw1120.02 |
| Ibm | Power System S922 \(9009-22g\) Firmware | >= fw950.00, < fw950.h4 |
| Ibm | Power System H922 \(9223-22s\) Firmware | >= fw950.00, < fw950.h4 |
| Ibm | Power System S914 \(9009-41g\) Firmware | >= fw950.00, < fw950.h4 |
| Ibm | Power System S924 \(9009-42g\) Firmware | >= fw950.00, < fw950.h4 |
| Ibm | Power System H924 \(9223-42s\) Firmware | >= fw950.00, < fw950.h4 |
| Ibm | Power System E950 \(9040-Mr9\) Firmware | >= fw950.00, < fw950.h4 |
| Ibm | Power System E980 \(9080-M9s\) Firmware | >= fw950.00, < fw950.h4 |
References
- https://www.ibm.com/support/pages/node/7289135Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-18870?
IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, FW1060.00 through FW1060.81, and FW950.00 through FW950.H3 could allow a remote attacker to obtain sensitive information due to an out-of-bounds read.
How severe is CVE-2026-18870?
CVE-2026-18870 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.
How do I fix CVE-2026-18870?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2026-18870?
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Scan your code nowSource: NVD / NIST