Vulnerability · Published Aug 12, 2021 · Assigned by microsoft
CVE-2021-34478Microsoft Office Remote Code Execution Vulnerability
High 7.8
In plain English
A high-severity security flaw in Microsoft 365 Apps for Enterprise from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 51.5% (higher than 99% of all known vulnerabilities).
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)51.5%top 1.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Microsoft Office Remote Code Execution Vulnerability
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise | 16.0.1 – before https://aka.ms/OfficeSecurityReleases |
| Microsoft | Microsoft Office 2019 | 19.0.0 – before https://aka.ms/OfficeSecurityReleases |
References
- Microsoft Office Remote Code Execution Vulnerability vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34478 x_refsource_MISC, x_transferred
- https://www.zerodayinitiative.com/advisories/ZDI-21-1024/ x_refsource_MISC, x_transferred