Technology · Microsoft
Microsoft Office 2021 vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 29 vulnerabilities in Microsoft Office 2021: 0 in the last 7 days and 26 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-102855, was published on 13 October 2026. 26 vulnerabilities in the last four weeks, up from none in the four before.
- Last 7 days
- 0
- Last 90 days
- 26
- Critical, all time
- 0
- Exploited in the wild
- 0
About Microsoft Office 2021
A version of the Microsoft Office productivity suite released in 2021 for Windows and macOS.
Latest Microsoft Office 2021 vulnerabilities
- CVE-2026-102855: Microsoft Office Visio heap buffer overflowhighCVSS 8.8EPSS 0.6%
- CVE-2026-88151: Microsoft Office Excel out-of-bounds readmediumCVSS 6.5EPSS 0.8%
- CVE-2026-69922: Microsoft Excel out-of-bounds read information disclosuremediumCVSS 6.5EPSS 0.8%
- CVE-2026-105718: Microsoft Office Excel out-of-bounds read in parsinghighCVSS 8.8EPSS 0.8%
- CVE-2026-105717: Microsoft Office Access heap-based buffer overflowhighCVSS 8.8EPSS 0.8%
- CVE-2026-105716: Microsoft Office Access heap buffer overflowhighCVSS 8.8EPSS 0.7%
- CVE-2026-105715: Microsoft Office Word integer overflow in network code executionhighCVSS 7.5EPSS 0.5%
- CVE-2026-105714: Microsoft Office Access heap-based buffer overflowhighCVSS 7.5EPSS 0.5%
- CVE-2026-105599: Microsoft Office PowerPoint heap-based buffer overflowhighCVSS 7.5EPSS 0.5%
- CVE-2026-105598: Microsoft Office Access heap buffer overflowhighCVSS 8.8EPSS 0.7%
- CVE-2026-105597: Microsoft Office Access heap-based buffer overflowhighCVSS 8.8EPSS 0.7%
- CVE-2026-105596: Microsoft Office Access heap-based buffer overflowhighCVSS 8.8EPSS 0.7%
- CVE-2026-105595: Microsoft Office Access out-of-bounds readhighCVSS 8.8EPSS 0.7%
- CVE-2026-105593: Microsoft Office Access heap buffer overflowhighCVSS 8.8EPSS 0.7%
- CVE-2026-105592: Microsoft Office Access heap-based buffer overflowhighCVSS 7.5EPSS 0.5%
- CVE-2026-105591: Microsoft Office Access heap-based buffer overflowhighCVSS 8.8EPSS 0.7%
- CVE-2026-102867: Microsoft Office Word out-of-bounds readmediumCVSS 6.5EPSS 0.9%
- CVE-2026-102858: Microsoft Office OneNote heap-based buffer overflowhighCVSS 8.8EPSS 0.7%
- CVE-2026-102857: Microsoft Office Visio heap-based buffer overflowhighCVSS 8.8EPSS 0.8%
- CVE-2026-102856: Microsoft Office Visio heap-based buffer overflowhighCVSS 8.8EPSS 0.8%
- CVE-2026-102850: Microsoft Office Access heap-based buffer overflowhighCVSS 8.8EPSS 0.6%
- CVE-2026-102849: Microsoft Office Access heap-based buffer overflowhighCVSS 8.8EPSS 0.6%
- CVE-2026-100212: Microsoft Office Excel use-after-free remote code executionhighCVSS 8.8EPSS 0.8%
- CVE-2026-100211: Microsoft Office Excel use-after-free remote code executionhighCVSS 8.8EPSS 0.8%
- CVE-2026-100210: Microsoft Office Excel heap-based buffer overflowhighCVSS 8.8EPSS 0.8%
Most severe Microsoft Office 2021 vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-105718: Microsoft Office Excel out-of-bounds read in parsinghighCVSS 8.8EPSS 0.8%
- CVE-2026-100211: Microsoft Office Excel use-after-free remote code executionhighCVSS 8.8EPSS 0.8%
- CVE-2026-100210: Microsoft Office Excel heap-based buffer overflowhighCVSS 8.8EPSS 0.8%
- CVE-2026-100209: Microsoft Office Excel use-after-free code executionhighCVSS 8.8EPSS 0.8%
- CVE-2026-100212: Microsoft Office Excel use-after-free remote code executionhighCVSS 8.8EPSS 0.8%
- CVE-2026-102857: Microsoft Office Visio heap-based buffer overflowhighCVSS 8.8EPSS 0.8%
- CVE-2026-102856: Microsoft Office Visio heap-based buffer overflowhighCVSS 8.8EPSS 0.8%
- CVE-2026-105717: Microsoft Office Access heap-based buffer overflowhighCVSS 8.8EPSS 0.8%
- CVE-2026-105716: Microsoft Office Access heap buffer overflowhighCVSS 8.8EPSS 0.7%
- CVE-2026-105598: Microsoft Office Access heap buffer overflowhighCVSS 8.8EPSS 0.7%
Vulnerabilities per week
26 vulnerabilities in the last four weeks, up from none in the four before. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 26 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Microsoft Office 2021 vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/office-2021)<a href="https://junglewise.ai/threats/technologies/office-2021"><img src="https://junglewise.ai/threats/technologies/office-2021/badge.svg" alt="Microsoft Office 2021 vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/office-2021.json, and this page as text at https://junglewise.ai/threats/technologies/office-2021.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Microsoft Office 2021 vulnerabilities", https://junglewise.ai/threats/technologies/office-2021, 13 November 2026.