High severity7.8NVD Advisory· Published Aug 11, 2026· Updated Aug 13, 2026
CVE-2026-63532
CVE-2026-63532
Description
Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to execute code locally.
Affected products
14- cpe:2.3:a:microsoft:microsoft_365:-:*:*:*:*:macos:*:*
cpe:2.3:a:microsoft:office_2016:-:*:*:*:-:*:x64:*+ 1 more
- cpe:2.3:a:microsoft:office_2016:-:*:*:*:-:*:x64:*
- cpe:2.3:a:microsoft:office_2016:-:*:*:*:-:*:x86:*
cpe:2.3:a:microsoft:office_2019:-:*:*:*:*:*:x64:*+ 8 more
- cpe:2.3:a:microsoft:office_2019:-:*:*:*:*:*:x64:*
- cpe:2.3:a:microsoft:office_2019:-:*:*:*:*:*:x86:*
- cpe:2.3:a:microsoft:office_2021:-:*:*:*:ltsc:-:x64:*
- cpe:2.3:a:microsoft:office_2021:-:*:*:*:ltsc:-:x86:*
- cpe:2.3:a:microsoft:office_2021:-:*:*:*:ltsc:macos:-:*
- cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:-:x64:*
- cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:-:x86:*
- cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:macos:-:*
- (no CPE)
Patches
Vulnerability mechanics
References
1- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-63532nvdVendor Advisory
News mentions
5- Microsoft Patch Tuesday for August 2026 — Snort rules and prominent vulnerabilitiesCisco Talos Intelligence · Aug 11, 2026
- Patch Tuesday - August 2026Rapid7 Blog · Aug 11, 2026
- Microsoft Patch Tuesday Update August 2026 – 394 Vulnerabilities Fixed, Including 3 Zero-DaysCyber Security News · Aug 11, 2026
- Microsoft Office 2016: 14 Vulnerabilities Including RCE Flaws Disclosed TogetherVypr Intelligence · Aug 11, 2026
- August 2026 Patch Tuesday: One Exploited Zero-Day and 62 Critical Vulnerabilities Among 415 CVEsCrowdStrike Blog