Technology · Microsoft
Microsoft Office Excel vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 115 vulnerabilities in Microsoft Office Excel: 59 in the last 7 days and 92 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-124229, was published on 10 November 2026. 7 vulnerabilities in the last four weeks, up from none in the four before.
- Last 7 days
- 59
- Last 90 days
- 92
- Critical, all time
- 0
- Exploited in the wild
- 0
About Microsoft Office Excel
Microsoft's spreadsheet application for creating and analyzing data using formulas and tables.
Latest Microsoft Office Excel vulnerabilities
- CVE-2026-124229: Microsoft Office Excel unsafe deserialization in file parsingmediumCVSS 6.6
- CVE-2026-124187: Microsoft Office Excel use-after-free remote code executionhighCVSS 8.8
- CVE-2026-124183: Microsoft Office Excel buffer over-read information disclosuremediumCVSS 6.5
- CVE-2026-124179: Microsoft Office Excel out-of-bounds read information disclosuremediumCVSS 6.5
- CVE-2026-124178: Microsoft Office Excel out-of-bounds readmediumCVSS 6.5
- CVE-2026-124176: Microsoft Office Excel heap-based buffer overflowhighCVSS 8.8
- CVE-2026-124174: Microsoft Office Excel heap-based buffer overflowhighCVSS 8.8
- CVE-2026-124170: Microsoft Office Excel heap-based buffer overflowhighCVSS 7.5
- CVE-2026-123395: Microsoft Office Excel code injection vulnerabilitymediumCVSS 5.9
- CVE-2026-123385: Microsoft Office Excel stack-based buffer overflowhighCVSS 8.8
- CVE-2026-120791: Microsoft Office Excel heap-based buffer overflowhighCVSS 8.8
- CVE-2026-120790: Microsoft Office Excel heap-based buffer overflowhighCVSS 8.8
- CVE-2026-120789: Microsoft Office Excel heap-based buffer overflowhighCVSS 8.8
- CVE-2026-120788: Microsoft Office Excel heap-based buffer overflowhighCVSS 8.8
- CVE-2026-120785: Microsoft Office Excel heap-based buffer overflowhighCVSS 8.8
- CVE-2026-119999: Microsoft Office Excel out-of-bounds readmediumCVSS 6.5
- CVE-2026-119986: Microsoft Office Excel heap buffer overflow in network parsinghighCVSS 8.8
- CVE-2026-118732: Microsoft Office Excel use after freehighCVSS 8.8
- CVE-2026-118731: Microsoft Office Excel stack-based buffer overflowhighCVSS 8.8
- CVE-2026-118730: Microsoft Office Excel use-after-free code executionhighCVSS 8.8
- CVE-2026-118729: Microsoft Office Excel use-after-free remote code executionhighCVSS 8.8
- CVE-2026-118728: Microsoft Office Excel out-of-bounds read information disclosuremediumCVSS 6.5
- CVE-2026-118727: Microsoft Office Excel out-of-bounds readmediumCVSS 6.5
- CVE-2026-118726: Microsoft Office Excel heap-based buffer overflowhighCVSS 8.8
- CVE-2026-118725: Microsoft Office Excel out-of-bounds read allows privilege escalationhighCVSS 8.8
Most severe Microsoft Office Excel vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-78518: Microsoft Office Excel out-of-bounds read in file parsinghighCVSS 8.8EPSS 0.9%
- 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-2026-65807: Microsoft Office Excel type confusion remote code executionhighCVSS 8.8EPSS 0.8%
- CVE-2026-100212: Microsoft Office Excel use-after-free remote code executionhighCVSS 8.8EPSS 0.8%
- CVE-2026-108446: Microsoft Office Excel use-after-free remote code executionhighCVSS 8.8EPSS 0.4%
- CVE-2026-124187: Microsoft Office Excel use-after-free remote code executionhighCVSS 8.8
- CVE-2026-124176: Microsoft Office Excel heap-based buffer overflowhighCVSS 8.8
Vulnerabilities per week
7 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 | 26 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 7 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 59 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Microsoft Office Excel vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/office-excel)<a href="https://junglewise.ai/threats/technologies/office-excel"><img src="https://junglewise.ai/threats/technologies/office-excel/badge.svg" alt="Microsoft Office Excel 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-excel.json, and this page as text at https://junglewise.ai/threats/technologies/office-excel.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 Excel vulnerabilities", https://junglewise.ai/threats/technologies/office-excel, 13 November 2026.