Vulnerability · Published Jun 9, 2026 · Assigned by microsoft
CVE-2026-47635Microsoft Outlook and Word Remote Code Execution Vulnerability
High 8.4
In plain English
A high-severity heap buffer overflow in Microsoft Office LTSC 2024 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).
Severity (CVSS 3.1)8.4High
Exploit odds (30 days)0.3%top 73.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Office LTSC 2024 | 16.0.0 – before https://aka.ms/OfficeSecurityReleases |
Weakness: CWE-122 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
References
- Microsoft Outlook and Word Remote Code Execution Vulnerability vendor-advisory, patch