CVE-2026-16987

HIGH CVSS 3.1: 7.8 EPSS 0.11%
Updated Aug 17, 2026
IBM
Parameter Value
CVSS 7.8 (HIGH)
Type CWE-73 (External Control of File Name or Path)
Vendor IBM
Public PoC No

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local attacker to gain elevated privileges due to improper validation of the LANG environment variable.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 4

Configuration From (including) Up to (excluding)
Ibm I
cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:*
Ibm I
cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*
Ibm I
cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*
Ibm I
cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:*