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CVE-2026-45659
MSR
HighConfirmedExploit available

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

CVSS
8.8
High
EPSS
0.01
p75
Published
2026-01-01
Updated
2026-01-01
Description

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Tags · CWE
CWE-502
CAPEC-586
Affected products
Sharepoint_server < 16.0.19725.20280Sharepoint_server
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Timeline
2026-01-01
Published
2026-01-01
Updated
CVSS 3.1 breakdown
Attack Vector
AV: N
Network (N)
Attack Complexity
AC: L
Low (L)
Privileges Required
PR: L
Low (L)
User Interaction
UI: N
None (N)
Scope
S: U
Unchanged (U)
Confidentiality Impact
C: H
High (H)
Integrity Impact
I: H
High (H)
Availability Impact
A: H
High (H)
Exploit indicators
EPSS
0.009 · p75
Known exploited (KEV)
No
Known exploits — Сканер-ВС
CVE-2026-45659
github-poc · https://github.com/daniel30padd/CVE-2026-45659
Enterprise
Affected software
ProductVendorStatus
sharepoint_server*Tracked
WindowsMicrosoftTracked
WindowsMicrosoftTracked
WindowsMicrosoftTracked
Source databases
MSR
CVE
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