Deserialization of untrusted data in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.
Metrics
Affected Vendors & Products
References
History
Wed, 11 Feb 2026 19:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Microsoft office
Microsoft office Long Term Servicing Channel Microsoft word |
|
| CPEs | cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:* cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*: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:2021:*:*:*:*:macos:*:* 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_long_term_servicing_channel:2024:*:*:*:*:macos:*:* cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:* cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:* cpe:2.3:a:microsoft:word:2016:*:*:*:*:*:x64:* cpe:2.3:a:microsoft:word:2016:*:*:*:*:*:x86:* |
|
| Vendors & Products |
Microsoft office
Microsoft office Long Term Servicing Channel Microsoft word |
Wed, 11 Feb 2026 17:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Tue, 10 Feb 2026 18:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Deserialization of untrusted data in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network. | |
| Title | Microsoft Outlook Spoofing Vulnerability | |
| First Time appeared |
Microsoft
Microsoft 365 Apps Microsoft office 2019 Microsoft office 2021 Microsoft office 2024 Microsoft office Macos 2021 Microsoft office Macos 2024 Microsoft sharepoint Server Microsoft sharepoint Server 2016 Microsoft sharepoint Server 2019 Microsoft word 2016 |
|
| Weaknesses | CWE-502 | |
| CPEs | cpe:2.3:a:microsoft:365_apps:*:*:*:*:enterprise:*:*:* cpe:2.3:a:microsoft:office_2019:*:*:*:*:*:*:*:* cpe:2.3:a:microsoft:office_2021:*:*:*:*:long_term_servicing_channel:*:*:* cpe:2.3:a:microsoft:office_2024:*:*:*:*:long_term_servicing_channel:*:*:* cpe:2.3:a:microsoft:office_macos_2021:*:*:*:*:*:long_term_servicing_channel:*:* cpe:2.3:a:microsoft:office_macos_2024:*:*:*:*:*:long_term_servicing_channel:*:* cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:* cpe:2.3:a:microsoft:sharepoint_server_2016:*:*:*:*:enterprise:*:*:* cpe:2.3:a:microsoft:sharepoint_server_2019:*:*:*:*:*:*:*:* cpe:2.3:a:microsoft:word_2016:*:*:*:*:*:*:*:* |
|
| Vendors & Products |
Microsoft
Microsoft 365 Apps Microsoft office 2019 Microsoft office 2021 Microsoft office 2024 Microsoft office Macos 2021 Microsoft office Macos 2024 Microsoft sharepoint Server Microsoft sharepoint Server 2016 Microsoft sharepoint Server 2019 Microsoft word 2016 |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: microsoft
Published:
Updated: 2026-02-13T22:30:33.619Z
Reserved: 2025-12-30T18:10:54.845Z
Link: CVE-2026-21511
Updated: 2026-02-11T15:45:37.079Z
Status : Analyzed
Published: 2026-02-10T18:16:33.337
Modified: 2026-02-11T18:56:56.907
Link: CVE-2026-21511
No data.