IBM i PTF Guide, Volume 28, Number 8

February 23, 2026 Doug Bidwell

This week, we start with three security vulnerabilities and a warning about media issues when you put your external LTO drives too close to the running Power Systems iron in your rack.

Let’s start with the vulnerabilities, as we often do.

First, we have Security Bulletin: IBM i is affected by denial of service vulnerabilities in Db2 JSON Store Technology Preview [CVE-2025-66453], which you can read more about here. The fixes for this vulnerability are as follows:

IBM i Release	PTF Number(s)
7.4	SJ08547
7.3	SJ08546
7.2	SJ08545

Second, we have IBM i Java Development Kit 8 64 & 32 bit VMs Fail with “Could not generate ECDHEMLKEM keypair” After IBM i Java Group PTF Apply, which you can find out more about at this link. The Java Group PTF Levels Providing Java 8 SR8 FP55 to fix this vulnerability are as follows, by IBM i release:

IBM i 7.6	SF99965 level 4
IBM i 7.5 	SF99955 level 19
IBM i 7.4 	SF99665 level 31
IBM i 7.3 	SF99725 level 40

Third, we have Security Bulletin: IBM Db2 Mirror for i is vulnerable to cross-site scripting and cross-site request forgery due to Angular [CVE-2025-66412, CVE-2026-22610, CVE-2025-66035], which you can find out more about at this link. The fixes for this, by IBM i release, are as follows:

IBM i Release PTF Numbers 7.4 SJ08519 7.5 SJ08520 7.6 SJ08521

That brings us to the wiggly and jiggly issue with external LTO tape drives. Installing 7226-1U3 media enclosure with LTO8 or newer tape directly above or below Power Systems server can result in media errors. Find out more at this link. To avoid media errors the IBM 7226-1U3 external media enclosures with installed LTO tape drives should not be mounted directly above or below Power System CEC enclosures. Modern LTO8 and newer drives operate within tight mechanical tolerances due to higher track density and tight servo tolerances. Because of these tolerances there is a possibility for low‑level vibrations originating from the CEC to affect the read and write performance of the LTO tape drive when installed directly above or below the CEC.

Here is the rundown of PTF Groups by IBM i release level since we last published:

PTF Groups 7.6:

HIPERs – High Impact Pervasive
Group Security
IBM HTTP Server for i
Rational Developer for i

PTF Groups 7.5:

HIPERs – High Impact Pervasive
Group Security
IBM HTTP Server for i
Rational Developer for i

PTF Groups 7.4:

HIPERs – High Impact Pervasive
Group Security
IBM HTTP Server for i
Rational Developer for i

PTF Groups 7.3:

HIPERs – High Impact Pervasive
Group Security
IBM HTTP Server for i
Rational Developer for i

PTF Groups 7.2:

None

Tip O’ The Week: The last two digits of the Win App ACS download is the Version of the ODBC driver. See the link in the ACS_NAV Tab!

New (or Updated) links added to the ‘Links’ tab in The Guide this week:

SSL/TLS: How To Enable an IBM Integrated Application Server (IAS) HTTP Server for Secure Socket Layer (SSL) / Transport Layer Security (TLS) using IBM Web Administration for i, 667587
Domino: Domino for IBM i: What system fixes are required? KB0026574
Domino: Domino 11.0 for IBM i: Software requirements, KB0078315
Domino: How to uninstall HCL Domino Server on an IBM i System using CFGDOMSVR, KB0080315

New (or Updated) links added to the ‘QMGtools’ tab in The Guide this week:

None

New (or Updated) links added to the ‘ACS_NAV’ tab in The Guide this week:

None

New (or Updated) links added to the ‘Prtr Links’ tab in The Guide this week:

None

New (or Updated) links Redbooks added this week:

None

New (or Updated) stuff added to REF tab in The Guide this week:

None

New (or Updated) links in the TAPE tab in The Guide this week:

None

New (or Updated) links in the WAS tab in The Guide this week:

WAS: How to Manually Associate an Apache HTTP Server with a WebSphere Application Server Profile, 643217

The Guide at a glance: There were new defectives the week of 02/21/26. Defective PTF rundown – the latest defective for each release. Click on the Defective PTF link for your release in the Guide:

	Defect	    Defective	APAR		Fixing
	Date	    PTF				PTF
	--------    --------	---------	-----------------------	
7.6	12/09/25    MJ07438	DT457460	MJ08280	(When available)(read the recommendations)
		  					Read the cover letter-prerequisites!			
7.5	01/15/26    SJ08112	DT460154	xxxxxxx (When available)(read the recommendations)
				 			Read the cover letter-prerequisites!                   	
7.4	09/11/25    MJ06247	DT450137	MJ07181	Same as above, Please read the Cover letter - 
							(When available)(read the recommendations)
							Read the cover letter-prerequisites!
7.3	01/27/25    SJ03169	DT422375	SJ03786 (When available)(read the recommendations)

Be sure to access the link in The Guide for further details.

With that, we are caught up. Finally.

Below is the usual archive of the IBM i PTF Guide to help you work through the PTFs in chronological order:

February 21, 2026: Volume 28, Number 08

February 14, 2026: Volume 28, Number 07

February 7, 2026: Volume 28, Number 06

January 31, 2026: Volume 28, Number 05

January 24, 2026: Volume 28, Number 04

January 17, 2026: Volume 28, Number 03

January 10, 2026: Volume 28, Number 02

January 3, 2026: Volume 28, Number 01

December 27, 2025: Volume 27, Number 52