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01 Record

CVE-2026-18681

This Power System Buffer Overflow

MediumPUBLISHEDCNA: ibm
CNA base score6.8 CVSS v3.xCVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

02 Description

This Power System Buffer Overflow

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.33% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 26.7% of scored records. A rank, not a probability.
NVD base score
6.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Analyzed. NVD last modified this record on 2026-08-25.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-08-19 18:36Z2 MO AGO
Last updated
2026-08-19 19:59Z2 MO AGO
Reserved
2026-08-03
Assigning CNA
ibm
Record state
PUBLISHED
Severity
Medium (CVSS 6.8)
CNA CVSS vector
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-121Stack-based Buffer OverflowVariant
Data version
5.2
Document digest
eb1c71e1744d87af046593c908140def339e8954733e7813c8574567e8e979a9

05 Affected products

VendorProductVersionsPlatforms
IBMServer FirmwareFW1120.00, FW1110.00 to FW1110.30, FW1060.00 to FW1060.80, FW950.00 to FW950.H2—

06 References

07 Remediation

Customers with the products below should install FW1120.01(1120_167), FW1110.31(1110_134) or newer to remediate this vulnerability. Power 11 1) IBM Power System E1180 (9080-HEU) Customers with the products below should install FW1060.81(1060_184) or newer to remediate this vulnerability. Power 10 1) IBM Power System E1080 (9080-HEX) Customers with the products below should install FW950.H3(950_230) or newer to remediate this vulnerability. Power 9 1) IBM Power System S922 (9009-22G) 2) IBM Power System H922 (9223-22S) 3) IBM Power System S914 (9009-41G) 4) IBM Power System S924 (9009-42G) 5) IBM Power System H924 (9223-42S) 6) IBM Power System E950 (9040-MR9) 7) IBM Power System E980 (9080-M9S) The images mentioned above can be located at IBM Fix Central : https://www.ibm.com/support/fixcentral/