CVE-2026-18869 PUBLISHED

IBM i is Affected By Denial of Service and Security Restriction Bypass Vulnerabilities in FTP [, ]

Assigner: ibm
Reserved: 04.08.2026 Published: 18.09.2026 Updated: 18.09.2026

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to bypass security restrictions and access internal network services due to improper validation of FTP PORT and EPRT commands.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CVSS Score: 6.4

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-TC1  PTF Number(s)PTF Download Link(s)7.6SJ11371 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11371 7.5SJ11382 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11382 7.4SJ11383 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11383 7.3SJ11384 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11384

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

References

Problem Types

  • CWE-918 Server-Side Request Forgery (SSRF) CWE