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 486 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)
- 99.9% probability of exploitation in the next 30 days, higher than 99.9% 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 2026-02-13
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. Weaponised exploit code for CVE-2025-49704 is publicly available. 1 public proof-of-concept repository is tracked for this identifier. It currently carries a trending score of 58 in the Threadlinqs vulnerability feed.
- trickest/cve (trickest)
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. 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
6 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.
- Storm-2603 Fileless ToolShell Breach of On-Prem SharePoint (CVE-2025-53770 / CVE-2025-53771) with Warlock/LockBit Ransomware — CRITICAL · 2026-11-05
- Rapid7 Q3 2026 Threat Landscape: High-Severity Flaws Exploited in 3 Days as The Gentlemen and Qilin Ransomware Dominate — HIGH · 2026-10-21
- Warlock Ransomware Attackers Hit Water and Telecom Operators via SharePoint ToolShell Exploitation (Longlegs / Storm-2603) — CRITICAL · 2026-10-01
- 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
Enriched from CVE.org, FIRST EPSS, CISA KEV, public proof-of-concept repositories. Last verified by Threadlinqs on .