CVEDB API

Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.001

EPSS Ranking 19.4%

CVSS Severity

CVSS v3 Score 7.8

References

Products affected by CVE-2026-42831

Microsoft » 365 Copilot » Version: N/A

cpe:2.3:a:microsoft:365_copilot:-
Microsoft » 365 Copilot » Version: 16.0.16026.20172

cpe:2.3:a:microsoft:365_copilot:16.0.16026.20172
Microsoft » 365 Copilot » Version: 16.0.16130.20156

cpe:2.3:a:microsoft:365_copilot:16.0.16130.20156
Microsoft » 365 Copilot » Version: 16.0.16827.20138

cpe:2.3:a:microsoft:365_copilot:16.0.16827.20138
Microsoft » 365 Copilot » Version: 16.0.18730.20000

cpe:2.3:a:microsoft:365_copilot:16.0.18730.20000
Microsoft » 365 Copilot » Version: 16.0.18827.20000

cpe:2.3:a:microsoft:365_copilot:16.0.18827.20000
Microsoft » 365 Copilot » Version: 16.0.18925.20000

cpe:2.3:a:microsoft:365_copilot:16.0.18925.20000
Microsoft » 365 Copilot » Version: 16.0.19127.20000

cpe:2.3:a:microsoft:365_copilot:16.0.19127.20000
Microsoft » 365 Copilot » Version: 16.0.19220.20000

cpe:2.3:a:microsoft:365_copilot:16.0.19220.20000
Microsoft » 365 Copilot » Version: 16.0.19328.20000

cpe:2.3:a:microsoft:365_copilot:16.0.19328.20000
Microsoft » 365 Copilot » Version: 16.0.19426.20044

cpe:2.3:a:microsoft:365_copilot:16.0.19426.20044
Microsoft » 365 Copilot » Version: 16.0.19822.20000

cpe:2.3:a:microsoft:365_copilot:16.0.19822.20000
Microsoft » Office » Version: 2024

cpe:2.3:a:microsoft:office:2024
Microsoft » Office Long Term Servicing Channel » Version: 2021

cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021