CVE-2026-81858
IBM i is Affected By A Denial of Service Vulnerability in Host Servers
HIGH
8.1
CVSS Score
Published: October 12, 2026 at 11:22 PM UTC
Updated: October 14, 2026 at 11:48 PM UTC
1 product affected across 1 vendorI
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Severity
HIGH8.1
Exploit prediction
EPSS 0.3%
SSVC
No known exploit
Description
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.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusANALYZED
CWE
CWE-125
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