CVE-2026-70320
Multiple vulnerabilities have been discovered in Microsoft Office. Some of them allow an attacker to cause remote arbitrary code execution, privilege escalation and breach of data confidentiality.
CSIRTS triage
- What
- Multiple vulnerabilities in Microsoft Office enable remote code execution, privilege escalation, and data confidentiality breaches.
- Who is affected
- Users of Microsoft Office with versions affected by CVE-2026-66807, CVE-2026-64911, CVE-2026-70310, CVE-2026-68814, CVE-2026-68799, CVE-2026-62842, CVE-2026-63526, and CVE-2026-63517.
- Urgency
- Highly urgent; remote code execution vulnerabilities in widely-used productivity software pose significant risk.
- Action
- Apply Microsoft August 2026 security patches immediately for all Office installations.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.38% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 31% of all EPSS-scored CVEs.
Advisory coverage (4)
- unknownMultiple vulnerabilities in Microsoft Office (August 12, 2026)cert-fr-avis · 2026-08-12
- unknownNCSC-2026-0286 [1.00] [M/H] Vulnerabilities patched in Microsoft Officencsc-nl · 2026-08-11
- mediumCVE-2026-70320: Improper input validation in Microsoft Office PowerPoint allows an unauthorized attacker to di…nvd · 2026-08-11
- mediumCVE-2026-70320: Powerpoint Information Disclosure Vulnerabilitymsrc · 2026-08-11
External references
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