# Microsoft Excel vulnerabilities Source: https://junglewise.ai/threats/technologies/excel Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/excel.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 48 vulnerabilities in Microsoft Excel: 5 in the last 7 days and 11 in the last 90 days, 6 of them critical and 6 exploited in the wild. The most recent, CVE-2026-120786, was published on 10 November 2026. 1 vulnerability in the last four weeks, up from none in the four before. ## Counts - Last 7 days: 5 - Last 30 days: 5 - Last 90 days: 11 - All time: 48 (6 critical, 6 exploited in the wild) ## About Microsoft Excel Spreadsheet application for data organization, calculations, and analysis. ## Latest Microsoft Excel vulnerabilities - [CVE-2026-120786: Microsoft Excel heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-120786-heap-based-buffer-overflow-in-microsoft-office-excel-allows-an) (high, CVSS 8.8, published 10 Nov 2026) - [CVE-2026-118723: Microsoft Excel untrusted pointer dereference code execution](https://junglewise.ai/threats/cve-2026-118723-untrusted-pointer-dereference-in-microsoft-office-excel-allows) (high, CVSS 7.8, published 10 Nov 2026) - [CVE-2026-118717: Microsoft Excel stack-based buffer overflow](https://junglewise.ai/threats/cve-2026-118717-stack-based-buffer-overflow-in-microsoft-office-excel-allows-an) (high, CVSS 8.8, published 10 Nov 2026) - [CVE-2026-118714: Microsoft Excel heap-based buffer overflow in spreadsheet parsing](https://junglewise.ai/threats/cve-2026-118714-heap-based-buffer-overflow-in-microsoft-office-excel-allows-an) (high, CVSS 8.8, published 10 Nov 2026) - [CVE-2026-116927: Microsoft Excel heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-116927-heap-based-buffer-overflow-in-microsoft-office-excel-allows-an) (high, CVSS 8.8, published 10 Nov 2026) - [CVE-2026-69922: Microsoft Excel out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-69922-out-of-bounds-read-in-microsoft-office-excel-allows-an) (medium, CVSS 6.5, published 13 Oct 2026) - [CVE-2026-81957: Microsoft Excel out-of-bounds read remote code execution](https://junglewise.ai/threats/cve-2026-81957-microsoft-excel-out-of-bounds-read-remote-code-execution) (high, CVSS 7.8, published 8 Sep 2026) - [CVE-2026-81397: Microsoft Excel heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-81397-microsoft-excel-heap-based-buffer-overflow) (high, CVSS 7.8, published 8 Sep 2026) - [CVE-2026-81396: Microsoft Excel stack-based buffer overflow](https://junglewise.ai/threats/cve-2026-81396-microsoft-excel-stack-based-buffer-overflow) (high, CVSS 7.8, published 8 Sep 2026) - [CVE-2026-81388: Microsoft Excel stack-based buffer overflow](https://junglewise.ai/threats/cve-2026-81388-microsoft-excel-stack-based-buffer-overflow) (high, CVSS 7.8, published 8 Sep 2026) - [CVE-2026-78515: Microsoft Excel out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-78515-microsoft-excel-out-of-bounds-read-information-disclosure) (medium, CVSS 6.5, published 8 Sep 2026) - [CVE-2026-68794: Microsoft Excel heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-68794-microsoft-excel-heap-based-buffer-overflow) (high, CVSS 7.8, published 11 Aug 2026) - [CVE-2026-68793: Microsoft Excel out-of-bounds read in parsing](https://junglewise.ai/threats/cve-2026-68793-microsoft-excel-out-of-bounds-read-in-parsing) (high, CVSS 7.8, published 11 Aug 2026) - [CVE-2026-45469: Microsoft Office Excel integer underflow code execution](https://junglewise.ai/threats/cve-2026-45469-microsoft-office-excel-integer-underflow-code-execution) (high, CVSS 7.8, published 9 Jun 2026) - [CVE-2026-45459: Microsoft Office Excel protection mechanism failure security bypass](https://junglewise.ai/threats/cve-2026-45459-microsoft-office-excel-protection-mechanism-failure-security) (low, CVSS 3.3, published 9 Jun 2026) - [CVE-2026-45455: Microsoft Office Excel out-of-bounds read](https://junglewise.ai/threats/cve-2026-45455-microsoft-office-excel-out-of-bounds-read) (low, CVSS 3.3, published 9 Jun 2026) - [CVE-2026-44823: Microsoft Office Excel integer underflow code execution](https://junglewise.ai/threats/cve-2026-44823-microsoft-office-excel-integer-underflow-code-execution) (high, CVSS 7.8, published 9 Jun 2026) - [CVE-2026-44822: Microsoft Office Excel out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-44822-microsoft-office-excel-out-of-bounds-read-information-disclosure) (high, CVSS 8.2, published 9 Jun 2026) - [CVE-2026-44820: Microsoft Office Excel integer underflow code execution](https://junglewise.ai/threats/cve-2026-44820-microsoft-office-excel-integer-underflow-code-execution) (high, CVSS 7.8, published 9 Jun 2026) - [CVE-2026-44818: Microsoft Office Excel integer underflow code execution](https://junglewise.ai/threats/cve-2026-44818-microsoft-office-excel-integer-underflow-code-execution) (high, CVSS 7, published 9 Jun 2026) - [CVE-2026-44817: Microsoft Office Excel integer underflow code execution](https://junglewise.ai/threats/cve-2026-44817-microsoft-office-excel-integer-underflow-code-execution) (high, CVSS 7.8, published 9 Jun 2026) - [CVE-2026-40362: Microsoft Office Excel heap buffer overflow](https://junglewise.ai/threats/cve-2026-40362-microsoft-office-excel-heap-buffer-overflow) (high, CVSS 7.8, published 12 May 2026) - [CVE-2026-40360: Microsoft Office Excel out-of-bounds read](https://junglewise.ai/threats/cve-2026-40360-microsoft-office-excel-out-of-bounds-read) (high, CVSS 7.8, published 12 May 2026) - [CVE-2026-40359: Microsoft Office Excel use after free code execution](https://junglewise.ai/threats/cve-2026-40359-microsoft-office-excel-use-after-free-code-execution) (high, CVSS 7.8, published 12 May 2026) - [CVE-2026-32199: Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.](https://junglewise.ai/threats/cve-2026-32199-use-after-free-in-microsoft-office-excel-allows-an-unauthorized) (high, CVSS 7.8, published 14 Apr 2026) ## Most severe Microsoft Excel vulnerabilities - [CVE-2009-0238: Microsoft Excel remote code execution via malformed object](https://junglewise.ai/threats/cve-2009-0238-microsoft-excel-remote-code-execution-via-malformed-object) (critical, exploited in the wild, CVSS 9.3, published 14 Apr 2026) - [CVE-2009-0557: Microsoft Office Object Record Corruption Vulnerability](https://junglewise.ai/threats/cve-2009-0557-microsoft-office-object-record-corruption-vulnerability) (critical, exploited in the wild, CVSS 9.3, published 8 Jun 2022) - [CVE-2009-3129: Microsoft Excel Featheader Record Memory Corruption Vulnerability](https://junglewise.ai/threats/cve-2009-3129-microsoft-excel-featheader-record-memory-corruption-vulnerability) (critical, exploited in the wild, CVSS 9.3, published 3 Mar 2022) - [CVE-2007-0671: Microsoft Office Excel remote code execution vulnerability](https://junglewise.ai/threats/cve-2007-0671-microsoft-office-excel-remote-code-execution-vulnerability) (critical, exploited in the wild, CVSS 8.8, published 12 Aug 2025) - [CVE-2019-1297: Microsoft Excel Remote Code Execution Vulnerability](https://junglewise.ai/threats/cve-2019-1297-microsoft-excel-remote-code-execution-vulnerability) (critical, exploited in the wild, CVSS 8.8, published 3 Mar 2022) - [CVE-2016-7262: Microsoft Office Security Feature Bypass Vulnerability](https://junglewise.ai/threats/cve-2016-7262-microsoft-office-security-feature-bypass-vulnerability) (critical, exploited in the wild, CVSS 7.8, published 3 Mar 2022) - [CVE-2026-120786: Microsoft Excel heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-120786-heap-based-buffer-overflow-in-microsoft-office-excel-allows-an) (high, CVSS 8.8, published 10 Nov 2026) - [CVE-2026-118717: Microsoft Excel stack-based buffer overflow](https://junglewise.ai/threats/cve-2026-118717-stack-based-buffer-overflow-in-microsoft-office-excel-allows-an) (high, CVSS 8.8, published 10 Nov 2026) - [CVE-2026-118714: Microsoft Excel heap-based buffer overflow in spreadsheet parsing](https://junglewise.ai/threats/cve-2026-118714-heap-based-buffer-overflow-in-microsoft-office-excel-allows-an) (high, CVSS 8.8, published 10 Nov 2026) - [CVE-2026-116927: Microsoft Excel heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-116927-heap-based-buffer-overflow-in-microsoft-office-excel-allows-an) (high, CVSS 8.8, published 10 Nov 2026) ## Vulnerabilities per week 1 vulnerability in the last four weeks, up from none in the four before. | 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 | 5 | 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 | 1 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 5 | 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 vulnerabilities", https://junglewise.ai/threats/technologies/excel, 13 November 2026.