High severity · published Aug 13, 2026
CVE-2026-18509
IBM i is Affected By A Prvilege Escalation Vulnerability []
7.1
CVSS
0.2%
EPSS
No
On KEV
Description
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local authenticated attacker to gain privilege escalation via the Navigator for i debugger. This could allow the attacker to access or manipulate sensitive data on the system, or create new profiles with elevated privileges on the IBM i system.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% 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, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-18509
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-18509
Vendor Advisory
https://www.ibm.com/support/pages/node/7283279
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