CVE-2026-45659
- EPSS 3.22%
- Veröffentlicht 22.05.2026 22:04:33
- Zuletzt bearbeitet 02.07.2026 12:16:47
- Quelle secure@microsoft.com
- CVE-Watchlists
- Unerledigt
Microsoft SharePoint Remote Code Execution Vulnerability
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Login01.07.2026: CISA Known Exploited Vulnerabilities (KEV) Catalog
Microsoft SharePoint Server Deserialization of Untrusted Data Vulnerability
SchwachstelleMicrosoft SharePoint Server contains a deserialization of untrusted data vulnerability which allows an authorized attacker to execute code over a network.
BeschreibungApply 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.
Erforderliche Maßnahmen| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 3.22% | 0.867 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| secure@microsoft.com | 8.8 | 2.8 | 5.9 |
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
|
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.