[NEW] [high] Microsoft Office Products: Multiple Vulnerabilities
An attacker can exploit multiple vulnerabilities in Microsoft Office Products to manipulate files, elevate privileges, disclose information, conduct a cross-site scripting attack, and execute arbitrary code.
CSIRTS triage
- What
- Multiple vulnerabilities enable file manipulation, privilege escalation, information disclosure, cross-site scripting, and arbitrary code execution.
- Who is affected
- All users and deployments of Microsoft Office Products.
- Urgency
- High severity with multiple exploitation paths including code execution; apply patches without delay.
- Action
- Apply security updates addressing all eight CVEs (CVE-2026-68802, CVE-2026-68804, CVE-2026-68805, CVE-2026-68812, CVE-2026-68814, CVE-2026-68815, CVE-2026-68816, CVE-2026-68817).
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2762
Exploitation outlook
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-2026-688020.34% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 28% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-688040.35% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 28% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-688050.33% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 25% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-688120.40% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 34% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-688140.40% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 34% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-688170.40% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 34% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-688150.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 23% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-688160.34% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 27% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-703270.85% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 55% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-688030.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 23% of all EPSS-scored CVEs.
Referenced CVEs
+12 more CVEs referenced in this advisory.
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownMultiple vulnerabilities in Microsoft Office (August 12, 2026)cert-fr-avis
- unknownNCSC-2026-0286 [1.00] [M/H] Vulnerabilities patched in Microsoft Officencsc-nl
- mediumCVE-2026-70328: Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose infor…nvd
- mediumCVE-2026-70327: Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose infor…nvd
- mediumCVE-2026-70318: Improper input validation in Microsoft Office Excel allows an unauthorized attacker to disclos…nvd
- mediumCVE-2026-70317: Use of uninitialized resource in Microsoft Office allows an unauthorized attacker to disclose …nvd
- highCVE-2026-70311: Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locall…nvd
- mediumCVE-2026-70310: Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose inform…nvd
- highCVE-2026-68817: Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execu…nvd
- highCVE-2026-68816: Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execu…nvd
- highCVE-2026-68815: Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execut…nvd
- highCVE-2026-68814: Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code l…nvd
Recent advisories for Microsoft Office Products
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- critical[NEW] [critical] Microsoft Office products: Multiple vulnerabilitiescert-bund · 2026-08-13
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