CVE-2026-18846

HIGH CVSS 3.1: 7.5 EPSS 0.39%
Updated Aug 17, 2026
IBM
Parameter Value
CVSS 7.5 (HIGH)
Affected Versions 7.3 — 7.6
Type CWE-787 (Out-of-bounds Write)
Vendor IBM
Public PoC No

IBM i 7.6, 7.5, 7.4, and 7.3 s vulnerable to a buffer overflow from improperly validating client data. By sending malformed requests to one of the host servers, a remote attacker could leverage this vulnerability to cause a denial-of-server (DoS) for that server.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Ibm I
cpe:2.3:a:ibm:i:*:*:*:*:*:*:*:*
7.3 <= 7.6