Vulnerability in Microsoft Office (August 21, 2026)

A vulnerability has been discovered in Microsoft Office. It allows an attacker to cause a breach of data confidentiality.

CSIRTS triage

What: A vulnerability in Microsoft Office allows an attacker to breach data confidentiality.
Who is affected: Users of Microsoft Office installations with the vulnerable version.
Urgency: Patch availability and exploitation status are unknown; moderate urgency pending Microsoft guidance.
Action: Monitor Microsoft security updates and apply the patch for CVE-2026-70105 when available.

AI-assisted analysis generated from the source advisory — verify against the original.

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EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-701050.54% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 43% of all EPSS-scored CVEs.

CVE	CSIRTS overview	External
CVE-2026-70105	coverage & exploitation status	NVD · CVE.org

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