IBM i PTF Guide, Volume 28, Number 31

September 14, 2026 Doug Bidwell

Big Blue is dumping a bunch of security vulnerabilities into your lap again, this time just ahead of the Labor Day holiday in the United States. We did not publish that week because we were on holiday, so we are playing catch up just like you now will be.

Let’s start with the Security Bulletin: IBM i is Affected By Improper Authorization and Authentication Vulnerabilities in DDM / DRDA [CVE-2026-18175, CVE-2026-18221], which you can find HERE. Affected Products and Versions:

IBM i Release	5770-SS1 	PTF Number(s)
7.6			        SJ11231
			        SJ11230
7.5			        SJ11232
			        SJ11233
7.4			        SJ11262
			        SJ11261	
7.3			        SJ11234
			        SJ11235

Security …