CVE-2026-17262

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

Published Sep 18, 2026 CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed
Description
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local attacker to cause a denial of service due to improper validation of FTP authentication commands.

Remediation

Vendor Solution

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.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:o:ibm:i:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local attacker to cause a denial of service due to improper validation of FTP authentication commands.
Title IBM i is Affected By Denial of Service and Security Restriction Bypass Vulnerabilities in FTP [, ]
First Time appeared Ibm
Ibm i
Weaknesses CWE-78
CPEs cpe:2.3:a:ibm:i:7.3.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.4.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.5.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.6.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm i
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
ibm
Published
Updated
Sep 23, 2026, 3:55 AM
Reserved
Jul 24, 2026, 10:36 PM
Status
Analyzed
Published
Sep 18, 2026, 8:17 PM
Modified
Nov 9, 2026, 7:37 PM