Security Bulletin: Multiple security vulnerabilities addressed with IBM Business Automation Workflow cumulative fixes May 2026

Summary In addition to updating many operating system level packages, the following security vulnerabilities are addressed with IBM Business Automation Workflow cumulative fixes. Vulnerability Details CVEID:CVE-2025-12183 DESCRIPTION: Out-of-bounds memory operations in org.lz4:lz4-java 1.8.0 and...

iskorotkov/avro: Denial-of-Service Vulnerability in Decoder

Memory Exhaustion via Unbounded Map Allocations in Avro Decoder Summary The Avro map decoder accepted attacker-controlled block-element counts from the wire format and grew the destination map without enforcing an upper bound. The slice decoder already had Config.MaxSliceAllocSize for the...

GHSA-MX64-MJ3Q-7PRJ iskorotkov/avro: Denial-of-Service Vulnerability in Decoder

Memory Exhaustion via Unbounded Map Allocations in Avro Decoder Summary The Avro map decoder accepted attacker-controlled block-element counts from the wire format and grew the destination map without enforcing an upper bound. The slice decoder already had Config.MaxSliceAllocSize for the...

2026-05 Cumulative Update for Windows 10 Version 1809 for x86-based Systems (KB5087538)

2026-05 Cumulative Update for Windows 10 Version 1809 for x86-based Systems KB5087538...

2026-05 Cumulative Update for Windows 10 Version 1607 for x86-based Systems (KB5087537)

2026-05 Cumulative Update for Windows 10 Version 1607 for x86-based Systems KB5087537...

2026-05 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 22H2 for x64 (KB5088863)

2026-05 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 22H2 for x64 KB5088863...

2026-05 Cumulative Update for .NET Framework 3.5, 4.7.2 and 4.8 for Windows 10 Version 1809 (KB5088864)

2026-05 Cumulative Update for .NET Framework 3.5, 4.7.2 and 4.8 for Windows 10 Version 1809 KB5088864...

2026-05 Cumulative Update for .NET Framework 4.8 for Windows Server 2016 for x64 (KB5087065)

2026-05 Cumulative Update for .NET Framework 4.8 for Windows Server 2016 for x64 KB5087065...

2026-05 Cumulative Update for Windows 10 Version 21H2 for x86-based Systems (KB5087544)

2026-05 Cumulative Update for Windows 10 Version 21H2 for x86-based Systems KB5087544...

2026-05 Cumulative Update for Windows 10 Version 1809 for x64-based Systems (KB5087538)

2026-05 Cumulative Update for Windows 10 Version 1809 for x64-based Systems KB5087538...

2026-05 Cumulative Update for Windows 10 Version 1607 for x64-based Systems (KB5087537)

2026-05 Cumulative Update for Windows 10 Version 1607 for x64-based Systems KB5087537...

2026-05 Cumulative Update for .NET Framework 4.8 for Windows 10 Version 1607 (KB5087065)

2026-05 Cumulative Update for .NET Framework 4.8 for Windows 10 Version 1607 KB5087065...

2026-05 Cumulative Update for Windows Server 2019 for x64-based Systems (KB5087538)

2026-05 Cumulative Update for Windows Server 2019 for x64-based Systems KB5087538...

2026-05 Dynamic Cumulative Update for Windows 10 Version 21H2 for x64-based Systems (KB5087544)

2026-05 Dynamic Cumulative Update for Windows 10 Version 21H2 for x64-based Systems KB5087544...

2026-05 Cumulative Update for .NET Framework 3.5 and 4.7.2 for Windows 10 Version 1809 for ARM64 (KB5088864)

2026-05 Cumulative Update for .NET Framework 3.5 and 4.7.2 for Windows 10 Version 1809 for ARM64 KB5088864...

2026-05 Dynamic Cumulative Update for Windows 10 Version 21H2 for ARM64-based Systems (KB5087544)

2026-05 Dynamic Cumulative Update for Windows 10 Version 21H2 for ARM64-based Systems KB5087544...

2026-05 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5087545)

2026-05 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems KB5087545...

2026-05 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Microsoft server operating system version 21H2 for x64 (KB5088862)

2026-05 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Microsoft server operating system version 21H2 for x64 KB5088862...

2026-05 Dynamic Cumulative Update for Windows 10 Version 21H2 for x86-based Systems (KB5087544)

2026-05 Dynamic Cumulative Update for Windows 10 Version 21H2 for x86-based Systems KB5087544...

2026-05 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 21H2 for ARM64 (KB5088859)

2026-05 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 21H2 for ARM64 KB5088859...