CVE-2025-53770
Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network. Microsoft is aware that an exploit for CVE-2025-53770 exists in the wild. Microsoft is preparing and fully testing a comprehensive update to address this vulnerability. In the meantime, please make sure that the mitigation provided in this CVE documentation is in place so that you are protected from exploitation.
Aktiv ausgenutzt
- Seit dem 20. Juli 2025 im CISA-Katalog ausgenutzter Schwachstellen
- US-Bundesbehörden müssen sie bis zum 21. Juli 2025 beheben (BOD 22-01)
- Angegriffen 2 Tage bevor die Schwachstelle öffentlich wurde
- Durch Sensoren bestätigt, nicht nur durch Meldungen
- In Ransomware-Kampagnen eingesetzt
Disconnect public-facing versions of SharePoint Server that have reached their end-of-life (EOL) or end-of-service (EOS) to include SharePoint Server 2013 and earlier versions. For supported versions, please follow the mitigations according to CISA (URL listed below in Notes) and vendor instructions (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.
Quelle: CISA KEV · 1. Okt. 2026 26. Sept. 2026 21. Sept. 2026 16. Sept. 2026 13. Sept. 2026 12. Sept. 2026
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HBetroffene Produkte
| Hersteller | Produkt | Versionen |
|---|---|---|
| microsoft | sharepoint server | < 16.0.18526.20508 |
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