Security Bulletin: Vulnerabilities in xorg-x11-server library (CVE-2026-50256, CVE-2026-50257, CVE-2026-50258, CVE-2026-50264, CVE-2026-59083, CVE-2026-55999) affect Power HMC. — IBM:7288809

Summary

IBM:7288809 is a security advisory from IBM. Security Bulletin: Vulnerabilities in xorg-x11-server library (CVE-2026-50256, CVE-2026-50257, CVE-2026-50258, CVE-2026-50264, CVE-2026-59083, CVE-2026-55999) affect Power HMC. Reported severity or threat: high.

Timeline

Published by source

2026-09-22

Risk context

• Reported severity or threat level: high.
• Review exposure for the affected product or family: IBM.

Product

IBM

What to do

General, cautious steps (verify details in the official source):

• Prioritize patching or mitigation immediately (treat as actively risky).
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source

Evidence and provenance

Canonical advisory ID

IBM:7288809

Source

IBM

Published by source

2026-09-22

Last source activity

2026-09-22

Curated by

hlukh.ch

Related advisories and connections

These advisories are connected by shared CVE, product, vendor, source, or time signals.