CVE-2026-50342
Local privilege escalation in Windows MIDI Service Module allowing elevation to SYSTEM
Is CVE-2026-50342 being exploited?
Not confirmed. CVE-2026-50342 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.30% probability of exploitation in the next 30 days.
How severe is CVE-2026-50342?
CVE-2026-50342 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-50342?
Yes. A fix has been recorded for CVE-2026-50342. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-50342 affect?
CVE-2026-50342 affects Microsoft Windows - MIDI Service Module (Windows OS). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-50342?
Apply vendor patch when released; restrict local access; enforce least privilege and EDR monitoring
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated local attacker can elevate privileges to SYSTEM, enabling persistence, credential theft, and full host compromise.
Patch when possible
- affected>= 10.0.26100.0 and < 10.0.26100.8875
- affected>= 10.0.26200.0 and < 10.0.26200.8875
- affected>= 10.0.28000.0 and < 10.0.28000.2525
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.