CVE-2025-53770

Critica9.8Pubblicata il 20 luglio 2025

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.

Sfruttata attivamente

Nel catalogo CISA delle vulnerabilità sfruttate dal 20 lug 2025
Le agenzie federali statunitensi devono correggerla entro il 21 lug 2025 (direttiva BOD 22-01)
Attaccata 2 giorni prima che la vulnerabilità fosse resa pubblica
Confermata dai sensori, non solo da segnalazioni
Usata in campagne ransomware

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.

Fonte: CISA KEV · 1 ott 2026 26 set 2026 21 set 2026 16 set 2026 13 set 2026 12 set 2026

Punteggio CVSS9.8 / 10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Tipo di debolezza (CWE)CWE-502

Vendormicrosoft