KEV · Activement exploitée
CVE-2026-50522
CRITICAL 9.8
KEV
EN Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.
Vecteur d'attaque : Réseau
Aucun privilège requis
Sans interaction utilisateur
Voir le vecteur CVSS brut
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
76.98%
exploit probable
percentile 99.5%
CISA Known Exploited Vulnerability
- Ajouté au KEV
- 2026-07-22
- Deadline remédiation
- 2026-07-25
- Action requise
- Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
- Ransomware
- Inconnu (non documenté par CISA)