D
eserialization of untrusted data in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.
References
| Link | Resource |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21511 | Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
11 Feb 2026, 18:56
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Microsoft office
Microsoft office Long Term Servicing Channel Microsoft word Microsoft sharepoint Server Microsoft 365 Apps Microsoft |
|
| References | () https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21511 - Vendor Advisory | |
| CPE | cpe:2.3:a:microsoft:word:2016:*:*:*:*:*:x64:* cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:* cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:macos:*:* cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:* cpe:2.3:a:microsoft:word:2016:*:*:*:*:*:x86:* cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x64:* cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:* cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x86:* cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:macos:*:* cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:* cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x64:* 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:sharepoint_server:*:*:*:*:subscription:*:*:* cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x86:* |
10 Feb 2026, 18:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-02-10 18:16
Updated : 2026-02-11 18:56
NVD link : CVE-2026-21511
Mitre link : CVE-2026-21511
CVE.ORG link : CVE-2026-21511
JSON object : View
Products Affected
CWE
CWE-502
Deserialization of Untrusted Data