CVE-2026-45659 :: Enginsight Vulnerability Database

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	8.8 HIGH	NETWORK	LOW	LOW	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Awaiting analysis

This vulnerability is currently awaiting analysis.

Base Score

CVSS 3.x

EPSS Score

Percentile: 66%

Common Weakness Enumeration

CWE-502 - Deserialization of Untrusted Data
The application deserializes untrusted data without sufficiently verifying that the resulting data will be valid.

Vulnerability Media Exposure

[GERMAN] Microsoft SharePoint Server 2016 und SharePoint Server 2019: Schwachstelle ermöglicht Codeausführung
Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Microsoft SharePoint Server 2016, Microsoft SharePoint Server 2019 und Microsoft SharePoint ausnutzen, um beliebigen Programmcode auszuführen.
Published: 2026-05-21T22:00:00+00:00
[ENGLISH] Microsoft Patches SharePoint RCE Flaw CVE-2026-45659 Across Server Versions
Microsoft has rolled out updates to fix a remote code execution vulnerability impacting SharePoint that could be exploited by bad actors in attacks without requiring any specialized conditions to be met. The vulnerability, tracked as CVE-2026-45659, carries a CVSS score of 8.8. It has been assigned an important severity. "Deserialization of untrusted data in Microsoft Office SharePoint allows
Published: 2026-05-26T17:19:53+05:30

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45659