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Apexward Pulse
Type Vulnerability

Privilege escalation

Windows Installer Elevation of Privilege Vulnerability

1 sourceCVE-2026-96026

At a glance

Low
30-day window, from the last update
None observed
Evidence-weighted, not popularity
Why Low

Low rather than Medium: UK relevance is 40 of 100, little UK-specific signal so far.

Briefing

  • IT leaders should assess whether Windows Installer is present in their estate and review security configurations for local privilege management.

Questions to ask IT

  • Are we affected by CVE-2026-96026, and which of our systems would be?
  • If it is not yet patched, what mitigation is in place, and will the fix be done by 10 Dec?

Next steps

  1. Confirm whether this affects systems or suppliers in your estate

Summary

  • A vulnerability in Windows Installer could allow an authorised attacker to elevate privileges locally.
  • The issue involves CVE-2026-96026 and is reported as a use after free vulnerability.

Read the original reportMicrosoft Security Update Guide RSS(opens in a new tab)

7 reports

Part of Windows Installer Elevation of Privilege Vulnerability

All 7 reports in this story

Pulse

Last change 59m ago · Next recheck 11 Nov 2026, 19:04 UK time

  1. Story10 Nov 2026, 19:04 UK time · 59m ago

    Linked reporting from Microsoft Security Update Guide RSS (vendor psirt).

    Read source (Microsoft Security Update Guide RSS)

1 entry so far. The timeline chart appears once this story has more history.

Sources

How we know

Statements extracted from sources. Higher confidence means stronger corroboration.

  • ClaimedHeadline60% confidence

    Windows Installer Elevation of Privilege Vulnerability

  • ProbableSummary fact75% confidence

    Use after free in Windows Installer allows an authorised attacker to elevate privileges locally.

  • ConfirmedCVE identifier95% confidence

    Event involves CVE-2026-96026