Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to elevate privileges locally.
Project Subscriptions
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Wed, 11 Feb 2026 19:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Microsoft excel
Microsoft office Microsoft office Long Term Servicing Channel Microsoft office Online Server |
|
| Weaknesses | CWE-787 | |
| CPEs | cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:* cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:* cpe:2.3:a:microsoft:excel:2016:*:*:*:*:*:x64:* cpe:2.3:a:microsoft:excel:2016:*:*:*:*:*:x86:* cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x64:* cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x86:* cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x64:* cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x86:* cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:-:x64:* cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:-:x86:* cpe:2.3:a:microsoft:office_online_server:*:*:*:*:*:*:*:* |
|
| Vendors & Products |
Microsoft excel
Microsoft office Microsoft office Long Term Servicing Channel Microsoft office Online Server |
Tue, 10 Feb 2026 18:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to elevate privileges locally. | |
| Title | Microsoft Excel Elevation of Privilege Vulnerability | |
| First Time appeared |
Microsoft
Microsoft 365 Apps Microsoft excel 2016 Microsoft office 2019 Microsoft office 2021 Microsoft office 2024 |
|
| Weaknesses | CWE-122 | |
| CPEs | cpe:2.3:a:microsoft:365_apps:*:*:*:*:enterprise:*:*:* cpe:2.3:a:microsoft:excel_2016:*:*:*:*:*:*:x86:* cpe:2.3:a:microsoft:office_2019:*:*:*:*:*:*:*:* cpe:2.3:a:microsoft:office_2021:*:*:*:*:long_term_servicing_channel:*:*:* cpe:2.3:a:microsoft:office_2021:*:*:*:*:ltsc:*:*:* cpe:2.3:a:microsoft:office_2024:*:*:*:*:long_term_servicing_channel:*:*:* |
|
| Vendors & Products |
Microsoft
Microsoft 365 Apps Microsoft excel 2016 Microsoft office 2019 Microsoft office 2021 Microsoft office 2024 |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: microsoft
Published:
Updated: 2026-02-12T19:11:14.288Z
Reserved: 2025-12-11T21:02:05.737Z
Link: CVE-2026-21259
No data.
Status : Analyzed
Published: 2026-02-10T18:16:27.790
Modified: 2026-02-11T19:12:00.613
Link: CVE-2026-21259
No data.
OpenCVE Enrichment
Updated: 2026-02-12T12:32:13Z