# Microsoft Excel 2016 vulnerabilities

Source: https://junglewise.ai/threats/technologies/excel-2016  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 11 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/excel-2016.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 31 vulnerabilities in Microsoft Excel 2016: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-55949, was published on 14 July 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 31 (0 critical, 0 exploited in the wild)

## About Microsoft Excel 2016

Spreadsheet application for data analysis and calculations.

## Latest Microsoft Excel 2016 vulnerabilities

- [CVE-2026-55949: Microsoft Excel use of uninitialized resource code execution](https://junglewise.ai/threats/cve-2026-55949-microsoft-excel-use-of-uninitialized-resource-code-execution) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55947: Microsoft Office Excel heap buffer overflow](https://junglewise.ai/threats/cve-2026-55947-microsoft-office-excel-heap-buffer-overflow) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55898: Microsoft Office Excel out-of-bounds read](https://junglewise.ai/threats/cve-2026-55898-microsoft-office-excel-out-of-bounds-read) (medium, CVSS 6.1, published 14 Jul 2026)
- [CVE-2026-55141: Microsoft Office Excel stack-based buffer overflow](https://junglewise.ai/threats/cve-2026-55141-microsoft-office-excel-stack-based-buffer-overflow) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55138: Microsoft Excel untrusted pointer dereference information disclosure](https://junglewise.ai/threats/cve-2026-55138-microsoft-excel-untrusted-pointer-dereference-information) (medium, CVSS 5.5, published 14 Jul 2026)
- [CVE-2026-55137: Microsoft Office Excel heap buffer overflow](https://junglewise.ai/threats/cve-2026-55137-microsoft-office-excel-heap-buffer-overflow) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55136: Microsoft Excel untrusted pointer dereference remote code execution](https://junglewise.ai/threats/cve-2026-55136-microsoft-excel-untrusted-pointer-dereference-remote-code) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55131: Microsoft Excel heap buffer overflow code execution](https://junglewise.ai/threats/cve-2026-55131-microsoft-excel-heap-buffer-overflow-code-execution) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55122: Microsoft Excel out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-55122-microsoft-excel-out-of-bounds-read-information-disclosure) (high, CVSS 7.1, published 14 Jul 2026)
- [CVE-2026-55058: Microsoft Excel out-of-bounds read code execution](https://junglewise.ai/threats/cve-2026-55058-microsoft-excel-out-of-bounds-read-code-execution) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55054: Microsoft Excel out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-55054-microsoft-excel-out-of-bounds-read-information-disclosure) (medium, CVSS 6.5, published 14 Jul 2026)
- [CVE-2026-55053: Microsoft Excel heap buffer overflow code execution](https://junglewise.ai/threats/cve-2026-55053-microsoft-excel-heap-buffer-overflow-code-execution) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55048: Microsoft Excel integer overflow local code execution](https://junglewise.ai/threats/cve-2026-55048-microsoft-excel-integer-overflow-local-code-execution) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55046: Microsoft Office Excel out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-55046-microsoft-office-excel-out-of-bounds-read-information-disclosure) (medium, CVSS 5.5, published 14 Jul 2026)
- [CVE-2026-55044: Microsoft Office Excel out-of-bounds read code execution](https://junglewise.ai/threats/cve-2026-55044-microsoft-office-excel-out-of-bounds-read-code-execution) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55041: Microsoft Excel heap buffer overflow code execution](https://junglewise.ai/threats/cve-2026-55041-microsoft-excel-heap-buffer-overflow-code-execution) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55039: Microsoft Office Excel integer underflow code execution](https://junglewise.ai/threats/cve-2026-55039-microsoft-office-excel-integer-underflow-code-execution) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55037: Microsoft Office Excel heap buffer overflow](https://junglewise.ai/threats/cve-2026-55037-microsoft-office-excel-heap-buffer-overflow) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55036: Microsoft Excel buffer over-read code execution](https://junglewise.ai/threats/cve-2026-55036-microsoft-excel-buffer-over-read-code-execution) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55031: Microsoft Excel out-of-bounds read code execution](https://junglewise.ai/threats/cve-2026-55031-microsoft-excel-out-of-bounds-read-code-execution) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55029: Microsoft Excel heap buffer overflow in file parsing](https://junglewise.ai/threats/cve-2026-55029-microsoft-excel-heap-buffer-overflow-in-file-parsing) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55025: Microsoft Excel type confusion code execution](https://junglewise.ai/threats/cve-2026-55025-microsoft-excel-type-confusion-code-execution) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55024: Microsoft Excel type confusion code execution](https://junglewise.ai/threats/cve-2026-55024-microsoft-excel-type-confusion-code-execution) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-50408: Microsoft Excel out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-50408-microsoft-excel-out-of-bounds-read-information-disclosure) (medium, CVSS 5.5, published 14 Jul 2026)
- [CVE-2026-48580: Microsoft Excel untrusted pointer dereference information disclosure](https://junglewise.ai/threats/cve-2026-48580-microsoft-excel-untrusted-pointer-dereference-information) (medium, CVSS 5.5, published 14 Jul 2026)

## Most severe Microsoft Excel 2016 vulnerabilities

- [CVE-2026-55949: Microsoft Excel use of uninitialized resource code execution](https://junglewise.ai/threats/cve-2026-55949-microsoft-excel-use-of-uninitialized-resource-code-execution) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55947: Microsoft Office Excel heap buffer overflow](https://junglewise.ai/threats/cve-2026-55947-microsoft-office-excel-heap-buffer-overflow) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55141: Microsoft Office Excel stack-based buffer overflow](https://junglewise.ai/threats/cve-2026-55141-microsoft-office-excel-stack-based-buffer-overflow) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55137: Microsoft Office Excel heap buffer overflow](https://junglewise.ai/threats/cve-2026-55137-microsoft-office-excel-heap-buffer-overflow) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55136: Microsoft Excel untrusted pointer dereference remote code execution](https://junglewise.ai/threats/cve-2026-55136-microsoft-excel-untrusted-pointer-dereference-remote-code) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55131: Microsoft Excel heap buffer overflow code execution](https://junglewise.ai/threats/cve-2026-55131-microsoft-excel-heap-buffer-overflow-code-execution) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55058: Microsoft Excel out-of-bounds read code execution](https://junglewise.ai/threats/cve-2026-55058-microsoft-excel-out-of-bounds-read-code-execution) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55053: Microsoft Excel heap buffer overflow code execution](https://junglewise.ai/threats/cve-2026-55053-microsoft-excel-heap-buffer-overflow-code-execution) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55048: Microsoft Excel integer overflow local code execution](https://junglewise.ai/threats/cve-2026-55048-microsoft-excel-integer-overflow-local-code-execution) (high, CVSS 7.8, published 14 Jul 2026)
- [CVE-2026-55044: Microsoft Office Excel out-of-bounds read code execution](https://junglewise.ai/threats/cve-2026-55044-microsoft-office-excel-out-of-bounds-read-code-execution) (high, CVSS 7.8, published 14 Jul 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other Microsoft technologies

- [Microsoft Windows](https://junglewise.ai/threats/technologies/windows): 2,362 vulnerabilities
- [Microsoft Windows 10](https://junglewise.ai/threats/technologies/windows-10): 589 vulnerabilities
- [Microsoft Windows 11 24h2](https://junglewise.ai/threats/technologies/windows-11-24h2): 565 vulnerabilities
- [Microsoft Windows 11 25h2](https://junglewise.ai/threats/technologies/windows-11-25h2): 534 vulnerabilities
- [Microsoft Windows Server 2025](https://junglewise.ai/threats/technologies/windows-server-2025): 534 vulnerabilities
- [Microsoft Windows Server 2022](https://junglewise.ai/threats/technologies/windows-server-2022): 528 vulnerabilities
- [Microsoft Windows Server 2019](https://junglewise.ai/threats/technologies/windows-server-2019): 521 vulnerabilities
- [Microsoft Windows Server 2012](https://junglewise.ai/threats/technologies/windows-server-2012): 517 vulnerabilities
- [Microsoft Windows 11](https://junglewise.ai/threats/technologies/windows-11): 494 vulnerabilities
- [Microsoft Windows Server 2016](https://junglewise.ai/threats/technologies/windows-server-2016): 476 vulnerabilities
- [Microsoft Windows 10 1809](https://junglewise.ai/threats/technologies/windows-10-1809): 380 vulnerabilities
- [Microsoft Windows 10 21h2](https://junglewise.ai/threats/technologies/windows-10-21h2): 373 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Microsoft Excel 2016 vulnerabilities", https://junglewise.ai/threats/technologies/excel-2016, 11 November 2026.