CVE-2025-49704 — Microsoft Sharepoint Server
CISA KEVRansomwareAs of 2025-10-27, CVE-2025-49704 is a HIGH-severity vulnerability in Microsoft Sharepoint Server, CVSS v3.1 8.8, EPSS 59.5% (98.2th percentile). It is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-07-22), with a US federal remediation deadline of 2025-07-23, and CISA links it to known ransomware campaigns. Threadlinqs Intelligence links 3 tracked threat campaigns to CVE-2025-49704, most recently “CVE-2026-56164: Microsoft SharePoint Server Missing-Authentication Vulnerability Actively Exploited, Added to CISA KEV”.
Last updated: 2025-10-27
What is CVE-2025-49704?
Improper control of generation of code ('code injection') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
The record classifies CVE-2025-49704 under weakness class CWE-94. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity, availability. 2 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 434 days ago.
Severity and exploitation probability
- CVSS v3.1 base score
- 8.8 — HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS (FIRST)
- 59.5% probability of exploitation in the next 30 days, higher than 98.2% of all scored CVEs
- CISA KEV
- Listed since 2025-07-22, federal remediation deadline 2025-07-23 — used in known ransomware campaigns
- Threadlinqs priority
- 10/10 — CISA lists it as used in ransomware, which Threadlinqs scores at the maximum
- Published
- 2025-07-08, last modified 2025-10-27
Is CVE-2025-49704 being exploited?
CISA added CVE-2025-49704 to the Known Exploited Vulnerabilities catalog on 2025-07-22, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2025-07-23 under BOD 22-01. CISA flags the vulnerability as one used in known ransomware campaigns. It currently carries a trending score of 40 in the Threadlinqs vulnerability feed.
Affected products and versions
- Microsoft: Sharepoint Server 2016, Sharepoint Server 2019
How to fix CVE-2025-49704
The record marks a vendor fix as available for CVE-2025-49704. Patch reference: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49704. Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49704. Because CVE-2025-49704 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2025-07-23. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.
Threat activity tracking CVE-2025-49704
3 tracked threats in the Threadlinqs corpus reference CVE-2025-49704, either in the campaign’s CVE list or as an indicator on the campaign record.
- CVE-2026-56164: Microsoft SharePoint Server Missing-Authentication Vulnerability Actively Exploited, Added to CISA KEV — CRITICAL · 2026-07-15
- CVE-2026-45659: SharePoint Deserialization RCE Added to CISA KEV Amid Storm-2603 Exploitation — HIGH · 2026-07-02
- CVE-2026-45659: Microsoft SharePoint Deserialization RCE Actively Exploited, Added to CISA KEV — HIGH · 2026-07-02
Sources
Seeded from nvd and not yet processed by the Threadlinqs enrichment pipeline, so blank CVSS, EPSS or KEV fields above mean NOT MEASURED rather than measured-absent.
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