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TI-2026-71466 Aliases CVE-2026-81858GHSA-wf64-vjxh-jr77

Out-of-bounds read in IBM i File Server causes denial of service

Priority LOW 35CWE-125Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

IBM i 7.3, 7.4, 7.5 and 7.6 are affected. An out-of-bounds read in the File Server (CWE-125) lets a remote authenticated attacker with low privileges cause a denial of service and obtain information.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00275 20th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
IBMi7.6; 7.5; 7.4; 7.3—No fix listedCNA
  • i VendorIBM Affected 7.6; 7.5; 7.4; 7.3 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:ibm:i:*:*:*:*:*:*:*:*7.3 – 7.6VulnerableIBM
  • cpe:2.3:o:ibm:i:*:*:*:*:*:*:*:* Versions 7.3 – 7.6 Vulnerable ·IBM

Remediation

The sources list no fixed version for IBM i.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-13 Threatist record created from CVE-2026-81858
  2. 2026-10-13 Alias added: GHSA-wf64-vjxh-jr77
  3. 2026-10-13 CISA SSVC decision points changed
  4. 2026-10-13 Priority changed: MEDIUM → LOW
  5. 2026-10-15 CVSS score added · NVD

References

Patch 1

  • TI-2024-18115 IBM i privilege escalation CVSS 3.1HIGH 7.8
  • TI-2026-14283 IBM i is Affected By Remote Code Execution Vulnerability in Line Printer Daemon [] CVSS 3.1CRITICAL 9.8
  • TI-2023-14729 IBM i command execution CVSS 3.1CRITICAL 9.8
  • TI-2026-14279 IBM i is Affected By Denial of Service Vulnerabilities in NFS [, ] CVSS 3.1CRITICAL 9.1
  • TI-2026-14196 IBM i is Affected By Denial of Service Vulnerabilities in NFS [, ] CVSS 3.1CRITICAL 9.1
  • TI-2026-13994 IBM i is Affected By Multiple Vulnerabilities in Simple Mail Transfer Protocol CVSS 3.1CRITICAL 9.1
See all 207 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences