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CVE-2025-54897

40
FAUCET Score

CVE-2025-54897 is a critical deserialization of untrusted data vulnerability in Microsoft Office SharePoint, allowing an authenticated attacker to achieve remote code execution over a network. With a CVSS score of 8.8 (High), it presents a significant risk due to its low attack complexity and high impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered substantial community attention with 22 mentions and two media articles, indicating a high level of awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
< 16.0.19127.20100CPE matchmatch criteria
cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*
2016CPE matchmatch criteria
cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*
2019CPE matchmatch criteria
cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
13.60%
Probability of exploitation in next 30 days
EPSS Percentile
96.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1360 is in the 95th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

microsoftpatch availablevia msrc
Product: Microsoft SharePoint Enterprise Server 2016Fixed in: 16.0.5517.1000
View patch
microsoftpatch availablevia msrc
Product: Microsoft SharePoint Server 2019Fixed in: 16.0.10417.20047
View patch
microsoftpatch availablevia msrc
Product: Microsoft SharePoint Server Subscription EditionFixed in: 16.0.19127.20100
View patch
3cxvendor investigatingvia llm_extracted
microsoftvendor investigatingvia nvd_reference
View patch

Vendor Advisories (2)

3cxllm-3cx-4e28c17900895daaHIGH

Microsoft SharePoint Server Insecure Deserialization (CVE-2025-54897)

Mar 29, 2026
microsoft2025-Sep/CVE-2025-54897Important

Microsoft SharePoint Remote Code Execution Vulnerability

Sep 9, 2025

References

msrc.microsoft.com / update-guide/vulnerability/CVE-2025-54897
Vendor Advisory