Microsoft · Code execution
Microsoft Office Word Remote Code Execution Vulnerability
At a glance
Low rather than Medium: UK relevance is 40 of 100, little UK-specific signal so far.
Briefing
There is no written leader briefing for this story yet. These questions come from the facts we hold.
Questions to ask IT
- Do we run Microsoft Office, and which versions?
- If it is not yet patched, what mitigation is in place, and will the fix be done by 10 Dec?
Next steps
- Confirm whether this affects systems or suppliers in your estate
- The vulnerability involves a use after free condition in Microsoft Office Word that could be exploited to execute code remotely.
Next steps
- Review the advisory against your asset inventory and patch cadence
Summary
- A vulnerability in Microsoft Office Word could allow an attacker to execute code remotely over a network.
Read the original reportMicrosoft Security Update Guide RSS(opens in a new tab)
Products and services involved
- Microsoft Office98% match confidence · CVE-2026-109491
Pulse
Last change 59m ago · Next recheck 11 Nov 2026, 19:03 UK time
- Story10 Nov 2026, 19:03 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
CVE-2026-109491 Microsoft Office Word Remote Code Execution Vulnerability
How we know
Statements extracted from sources. Higher confidence means stronger corroboration.
- ClaimedHeadline60% confidence
Microsoft Office Word Remote Code Execution Vulnerability
- ProbableSummary fact75% confidence
Use after free in Microsoft Office Word allows an unauthorised attacker to execute code over a network.
- ConfirmedCVE identifier95% confidence
Event involves CVE-2026-109491