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CVE-2023-29357Microsoft SharePoint Server Elevation of Privilege Vulnerability

Microsoft SharePoint Server Elevation of Privilege Vulnerability

9.8 CRITICALEPSS 99.98%⚡ Known Exploited (CISA KEV)NVD: Analyzed

Last updated: 2026-06-17 05:49 UTC

OverviewCVSS details

9.8CRITICALCVSS 3.1

Score source: microsoft (CNA)
NVD status: Analyzed
Published: Jun 14, 2023
Assigner: microsoft

Affected

Microsoft SharePoint Server 2019 (Microsoft)

Versions: 16.0.0 before 16.0.10399.20005
Fixed in: 16.0.10399.20005

Exploitation

Public exploit: None listed
CISA KEV: Listed · Jan 10, 2024
KEV due date: Jan 31, 2024
Ransomware use: Known
SSVC: Exploitation active · Automatable yes · Impact total

EPSS · FIRST, scored Nov 7

99.98%chance of exploitation in 30 days

Higher than 99.98% of CVEs

CVSS 3.1 · microsoft (CNA)

9.8Critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

CVSS 3.1 · microsoft (CNA)

9.8Critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

NVD status: Analyzed

Overview Affected Products References

Overview

Severity

Score	Severity	Version	Vector String
9.8	CRITICAL	3.1microsoft (CNA)	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8	CRITICAL	3.1microsoft (CNA)	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

CISA required action

⚡ Known exploited · remediation due Jan 31, 2024

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Details

CVE ID: CVE-2023-29357
Status: Analyzed
Assigner (CNA): microsoft
Published: Jun 14, 2023
Last modified: 2026-06-17 05:49 UTC
Weaknesses: CWE-303 · Incorrect Implementation of Authentication Algorithm

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-08 13:49 UTC.