Vulnerability · Published Jan 13, 2026 · Assigned by microsoft
CVE-2026-20943Microsoft Office Click-To-Run Remote Code Execution Vulnerability
High 7.0
In plain English
A high-severity security flaw in Microsoft Office 2016 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 51% of all known vulnerabilities).
Severity (CVSS 3.1)7.0High
Exploit odds (30 days)0.6%top 48.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Untrusted search path in Microsoft Office allows an unauthorized attacker to execute code locally.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Office 2016 | 16.0.0 – before 16.0.5535.1000 |
| Microsoft | Microsoft Office Deployment Tool | 1.0 – before 16.0.19426.20170 |
| Microsoft | Microsoft SharePoint Enterprise Server 2016 | 16.0.0 – before 16.0.5535.1001 |
| Microsoft | Microsoft SharePoint Server 2019 | 16.0.0 – before 16.0.10417.20083 |
| Microsoft | Microsoft SharePoint Server Subscription Edition | 16.0.0 – before 16.0.19127.20442 |
Weakness: CWE-426 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
References
- Microsoft Office Click-To-Run Remote Code Execution Vulnerability vendor-advisory, patch