Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
References
| Link | Resource |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20957 | Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
14 Jan 2026, 19:47
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:*:* cpe:2.3:a:microsoft:office_online_server:*:*:*:*:*:*:*:* cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:macos:*:* cpe:2.3:a:microsoft:excel:2016:*:*:*:*:*:*:* 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:365_apps:-:*:*:*:enterprise:*:x86:* cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:macos:*:* cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x86:* cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:* cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x64:* |
|
| References | () https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20957 - Vendor Advisory | |
| First Time |
Microsoft excel
Microsoft office Microsoft 365 Apps Microsoft Microsoft office Long Term Servicing Channel Microsoft office Online Server |
13 Jan 2026, 18:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-01-13 18:16
Updated : 2026-01-14 19:47
NVD link : CVE-2026-20957
Mitre link : CVE-2026-20957
CVE.ORG link : CVE-2026-20957
JSON object : View
Products Affected
microsoft
- 365_apps
- excel
- office
- office_online_server
- office_long_term_servicing_channel