Microsoft · Microsoft
CVE-2026-42897
Microsoft Exchange Server Spoofing Vulnerability
O que é
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
CISA: Microsoft Exchange Server contains a cross-site scripting vulnerability during web page generation in Outlook Web Access and when certain interaction conditions are met, arbitrary JavaScript can be executed in the browser context.
O que fazer
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Prazo para as agências federais dos EUA: 29 de maio de 2026
Mais falhas exploradas de Microsoft
| Adicionado | Vulnerabilidade | Produto | Gravidade | Chance de ataque |
|---|---|---|---|---|
| 13 de out. de 2026 | Command Injection | Windows | Alto 8,8 | 9,8% |
| 25 de set. de 2026 | Code Injection | SharePoint | Alto 8,8 | 8,2% |
| 8 de set. de 2026 | Link Following | Windows | Alto 7,8 | 0,4% |
| 8 de set. de 2026 | Heap-Based Buffer Overflow | Windows | Alto 7,8 | 0,4% |
| 26 de ago. de 2026 | Remote Code Execution | SQL Server | Alto 8,8 | 57% |
| 18 de ago. de 2026 | Double Free | Internet Key Exchange (IKE) Service Extensions | Crítica 9,8 | 77% |
| 18 de ago. de 2026 | Weak Authentication | SharePoint | Crítica 9,1 | 70% |
| 11 de ago. de 2026 | Windows Ancillary Function Driver for WinSock Use-After-Free | Windows Ancillary Function Driver for WinSock | Alto 7,0 | 0,3% |
Fontes: Known Exploited Vulnerabilities (CISA, domínio público), CVE records (cve.org) e EPSS (FIRST). A chance de ataque é a estimativa EPSS de que alguém tente explorar a falha nos próximos 30 dias.