CVE-2026-20947 is a high-severity vulnerability found in Microsoft SharePoint Server, classified as a SQL injection issue. This vulnerability allows an authorized attacker to execute arbitrary code over a network, posing significant risks to organizations that utilize this platform. The CVSS score for this vulnerability is 8.8, indicating a high level of severity that necessitates immediate attention.
The vulnerability arises from improper neutralization of special elements used in SQL commands, which can be exploited if an attacker has authorized access. The potential impact includes unauthorized access to sensitive data, modification of data integrity, and disruption of availability. Organizations utilizing affected versions of SharePoint Server should prioritize remediation efforts.
Given the nature of this vulnerability, it is crucial for security teams to assess their environments for vulnerable versions and apply patches promptly. The urgency for organizations to prioritize patching cannot be overstated, as attackers may leverage this vulnerability to perform malicious activities.
The vulnerability was disclosed on January 13, 2026, and has been analyzed to confirm its severity. Organizations must stay vigilant and ensure their SharePoint Server installations are updated to minimize exposure to such vulnerabilities.
Vulnerability Details
CVE-2026-20947 represents an improper neutralization of special elements used in SQL commands, leading to a SQL injection vulnerability in Microsoft Office SharePoint. The flaw allows authorized attackers to execute code over a network. The vulnerability has a CVSS 3.1 score of 8.8, denoting high severity, with a low attack complexity, low privileges required, and no user interaction necessary.
The affected product is Microsoft SharePoint Server, specifically the versions prior to 16.0.19127.20442, as well as SharePoint Server 2016 and 2019. The vulnerability was published on January 13, 2026, and falls under CWE-89.
Technical Analysis
The root cause of CVE-2026-20947 is improper handling of user inputs, which allows an attacker to manipulate SQL queries sent to the database. Attackers can exploit this flaw remotely over a network, as it requires only low privileges and no user interaction to execute the payload. The attack complexity is low, making it easier for attackers to exploit this vulnerability.
The implications of this vulnerability are severe, with high impacts on confidentiality, integrity, and availability. Attackers may compromise sensitive data, alter its integrity, and disrupt service availability, leading to significant operational risks for organizations.
Risk & Impact Analysis
Risk to organizations includes unauthorized access to sensitive information, data manipulation, and potential service disruptions. The blast radius of this vulnerability can extend across enterprise environments that utilize SharePoint for collaboration and data management.
Given the CVSS score of 8.8, organizations should address this vulnerability in their priority patch cycle. The urgency for patching is critical, as the vulnerability exposes systems to exploitation that could lead to severe data breaches.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of Microsoft SharePoint Server include all versions prior to 16.0.19127.20442, as well as SharePoint Server 2016 and 2019. Organizations running these versions should prioritize upgrades to the latest patches.
Mitigation & Remediation
Organizations are advised to apply the latest patches for Microsoft SharePoint Server as soon as possible to protect against this vulnerability. If a patch is unavailable, consider implementing configuration hardening and network segmentation to limit exposure. Regular monitoring and security assessments should also be conducted to identify potential vulnerabilities.
For further guidance on improving security postures, organizations may explore penetration testing services that help to identify and address security weaknesses.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for unusual SQL activity, as well as any unauthorized access attempts. Behavioral anomalies in application usage patterns may also indicate exploitation attempts. Network signatures associated with SQL injection attacks should be utilized to enhance detection capabilities.
AppSecure Threat Intelligence Insight
This vulnerability highlights the ongoing risk of SQL injection attacks across enterprise platforms. As organizations increasingly rely on web applications for critical operations, the need for robust security measures becomes paramount. Continuous evaluation of security practices and timely application of updates are essential in mitigating risks.
Security teams should implement comprehensive monitoring and assessment strategies to detect vulnerabilities before they can be exploited. For further insights on security practices, organizations can refer to penetration testing methodology and vulnerability management program design best practices.
As part of an adaptive security strategy, organizations should consider API penetration testing to further identify potential vulnerabilities in their systems.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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