Remote Authentication Vulnerability in IBM i File Server
CVE-2026-81858

5.4MEDIUM

Key Information:

Vendor

IBM
Status
I
Vendor
CVE Published:
12 October 2026

What is CVE-2026-81858?

The IBM i File Server is susceptible to a vulnerability that allows a remote authenticated attacker to trigger a denial of service. This can result in an out-of-bounds read, exposing sensitive information to the attacker. Users of IBM i versions 7.3, 7.4, 7.5, and 7.6 should apply the appropriate patches to safeguard their systems and protect against potential exploitation.

Affected Version(s)

i 7.6

i 7.5

i 7.4

References

https://www.ibm.com/support/pages/node/7290195
vendor-advisorypatch

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.