CVE-2026-81858 PUBLISHED

IBM i is Affected By A Denial of Service Vulnerability in Host Servers

Assigner: ibm
Reserved: 27.08.2026 Published: 12.10.2026 Updated: 13.10.2026

IBM i 7.3, 7.4, 7.5, and 7.6 could allow a remote authenticated attacker to cause a denial of service and obtain information due to an out-of-bounds read in the File Server.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
CVSS Score: 5.4

Product Status

Vendor IBM
Product i
Versions
  • Version 7.6 is affected
  • Version 7.5 is affected
  • Version 7.4 is affected
  • Version 7.3 is affected

Solutions

IBM i Release5770-SS1  PTF Number(s)PTF Download Link(s)7.6SJ11622 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11622 7.5SJ11621 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11621 7.4SJ11620 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11620 7.3SJ11619 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11619

IBM recommends users running unsupported versions of affected products upgrade to a supported and fixed version of affected products.

References

Problem Types

  • CWE-125 Out-of-bounds Read CWE