Microsoft Office Word is widely deployed; a remote code execution bug in Word can enable broad enterprise compromise via crafted documents, making it broadly newsworthy and high-impact.
CVE-2026-108442
Remote code execution in Microsoft Word via crafted document
Is CVE-2026-108442 being exploited?
Not confirmed. CVE-2026-108442 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.
How severe is CVE-2026-108442?
CVE-2026-108442 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-2026-108442?
Yes. A fix has been recorded for CVE-2026-108442. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-108442 affect?
CVE-2026-108442 affects Microsoft Office Word, Microsoft Office (client versions), Windows systems running Office. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-108442?
Install Microsoft security update immediately
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution by opening a malicious Word document; attacker can run arbitrary code as the user over a network.
Immediate action required
- affected>= 16.0.1 and < https://aka.ms/OfficeSecurityReleases
- affected>= 1.0.0 and < 16.114.26101123
- affected>= 16.0.1 and < 16.0.14334.20974
- affected>= 16.0.0 and < 16.0.17932.21056
- affected>= 16.0.1 and < 16.114.26101123
- affected>= 16.0.0 and < 16.114.26101123
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.