On 2025-07-22, CISA added CVE-2025-49706 (Microsoft SharePoint) to its Known Exploited Vulnerabilities (KEV) catalog [2]. The vulnerability is listed in the catalog as "Microsoft SharePoint Improper Authentication Vulnerability" [2]. CISA requires remediation in accordance with the listed vendor mitigation guidance; see the original text in the body for specific requirements [2].
Backfill: this event became public on Jul 22, 2025 and we added it on Nov 10, 2026. It is not a new event.
CISA Adds Microsoft SharePoint Vulnerability CVE-2025-49706 to Known Exploited Vulnerabilities Catalog
1 min read
- Disclosed
- Jul 22, 2025
- Published
- Nov 10, 2026
- Last updated
- Nov 8, 2026
- CVSS basis
- Our assessment
- 99.9%, higher than 100% of CVEs
- Exploitation and patch status
- ExploitedKEV
- Attack vector
- Vulnerability status
- Actor type
- Motivation
On this page
30-second summary
What happened
Who is affected
Industries mainly affected: Government, Cross-industry
What to do nowOur advice
CISA requires remediation in accordance with the listed vendor mitigation guidance; see the original text in the body for specific requirements [2].
Timeline
Technical details
CISA KEV Listing Record
CISA added CVE-2025-49706 (Microsoft SharePoint) to the Known Exploited Vulnerabilities () catalog on 2025-07-22 [2].
Original Technical Description
Microsoft SharePoint contains an improper authentication vulnerability that allows an authorized attacker to perform spoofing over a network. Successfully exploitation could allow an attacker to view sensitive information and make some changes to disclosed information. This vulnerability could be chained with CVE-2025-49704. CVE-2025-53771 is a bypass for CVE-2025-49706, and the updates for CVE-2025-53771 include more robust protection than those for CVE-2025-49706. [2]
Official Required Action
Disconnect public-facing versions of SharePoint Server that have reached their end-of-life (EOL) or end-of-service (EOS) to include SharePoint Server 2013 and earlier versions. For supported versions, please follow the mitigations according to CISA (URL listed below in Notes) and vendor instructions (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available. [2]
Individual Vulnerability Record
The U.S. National Vulnerability Database (NVD) provides an independent vulnerability record and description for CVE-2025-49706 [1].
References
Official / primary3
- [1]
“Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.”
- [2]CISA2025-07-22Accessed 2026-11-07
This site aggregates public information and is not security consulting advice. Test remediation steps before applying.