Medium severity · published Sep 18, 2026
CVE-2026-17262
IBM i is Affected By Denial of Service and Security Restriction Bypass Vulnerabilities in FTP [, ]
5.4
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
I
i · IBM
7.6; 7.5; 7.4; 7.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-17262
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-17262
www.ibm.com
https://www.ibm.com/support/pages/node/7287873
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