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CISA Warns of MongoDB Server Vulnerability(CVE-2025-14847) Exploited in Attacks

The Cybersecurity and Infrastructure Security Agency (CISA) has included a critical vulnerability in MongoDB Server, identified as CVE-2025-14847, in its Known Exploited Vulnerabilities (KEV) catalog. This vulnerability is currently being exploited in…

The Cybersecurity and Infrastructure Security Agency (CISA) has included a critical vulnerability in MongoDB Server, identified as CVE-2025-14847, in its Known Exploited Vulnerabilities (KEV) catalog. This vulnerability is currently being exploited in cyberattacks.

The vulnerability, CVE-2025-14847, affects MongoDB Server and results from improper handling of the length parameter in Zlib-compressed protocol headers. This flaw allows unauthenticated attackers to read uninitialized heap memory.

Attribute Details

CVE ID CVE-2025-14847

Affected Product MongoDB and MongoDB Server

Vulnerability Type Improper Handling of Length Parameter Inconsistency

The vulnerability, CVE-2025-14847, affects MongoDB Server and results from improper handling of the length parameter in Zlib-compressed protocol headers.
Sam Quinlan · Thehackingpost

Related CWE CWE-130

Attack Vector Unauthenticated client access

Impact Read uninitialized heap memory

This vulnerability poses a significant risk as it requires no authentication, allowing remote attackers to access sensitive data without valid credentials. CISA confirmed the active exploitation of this vulnerability as of December 29, 2025.

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Federal agencies are required to implement mitigations or discontinue the use of affected products by January 19, 2026, in accordance with the agency's Binding Operational Directive (BOD) 22-01. Organizations using MongoDB Server should apply security patches provided by MongoDB to address this vulnerability.

CWE-130, the classification for this vulnerability, pertains to improper handling of length parameter inconsistencies, which can lead to memory corruption and information disclosure. The vulnerability's inclusion in the KEV catalog indicates active targeting of MongoDB deployments by threat actors.

Organizations are advised to prioritize patching MongoDB servers and monitor for suspicious activity related to CVE-2025-14847. Security experts caution that unpatched servers could lead to data breaches or further enterprise network compromise.

CISA recommends applying vendor patches, following BOD 22-01 guidance for cloud services, or discontinuing product use if mitigations are unavailable.

Based on reporting by Cyber Security News.

AI transparency. This article was produced with the assistance of artificial intelligence and published under human editorial oversight. AI systems can make mistakes. Read how we use AI (EU AI Act, Art. 50).
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