CVE-2025-14847 - MongoDB MongoDB and MongoDB Server

Overview

A source-backed snapshot of this vulnerability.

Mismatched length fields in Zlib compressed protocol headers may allow a read of uninitialized heap memory by an unauthenticated client. This issue affects all MongoDB Server v7.0 prior to 7.0.28 versions, MongoDB Server v8.0 versions prior to 8.0.17, MongoDB Server v8.2 versions prior to 8.2.3, MongoDB Server v6.0 versions prior to 6.0.27, MongoDB Server v5.0 versions prior to 5.0.32, MongoDB Server v4.4 versions prior to 4.4.30, MongoDB Server v4.2 versions greater than or equal to 4.2.0, MongoDB Server v4.0 versions greater than or equal to 4.0.0, and MongoDB Server v3.6 versions greater than or equal to 3.6.0.

CISA KEVyesWhether CISA lists this as exploited.

Techniques0AI attack methods connected to this vulnerability.

Case studies0Examples where this vulnerability is mentioned.

Vulnerability status

How serious this vulnerability is and whether it is known to be exploited.

CISA KEVHIGH

CVE ID: CVE-2025-14847
Vendor/project: MongoDB
Product: MongoDB and MongoDB Server
Vulnerability name: MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency Vulnerability
Date added: 2025-12-29
Due date: 2026-01-19
Known ransomware campaign use: Unknown
CVSS v3: 7.5
CVSS v4: 8.7

CWE-130

Exploit context

What the vulnerability is about.

Mismatched length fields in Zlib compressed protocol headers may allow a read of uninitialized heap memory by an unauthenticated client. This issue affects all MongoDB Server v7.0 prior to 7.0.28 versions, MongoDB Server v8.0 versions prior to 8.0.17, MongoDB Server v8.2 versions prior to 8.2.3, MongoDB Server v6.0 versions prior to 6.0.27, MongoDB Server v5.0 versions prior to 5.0.32, MongoDB Server v4.4 versions prior to 4.4.30, MongoDB Server v4.2 versions greater than or equal to 4.2.0, MongoDB Server v4.0 versions greater than or equal to 4.0.0, and MongoDB Server v3.6 versions greater than or equal to 3.6.0.

Related AI techniques

AI attack methods connected to this vulnerability.

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No related AI attack methods. No AI attack method is connected to this vulnerability in the current data.

Related case studies

Examples where this vulnerability is mentioned.

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No related case studies. No case study currently mentions this vulnerability.

Source evidence

Original public records and references for this page.

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Original source

Original source links

Open the public records and source datasets used for this page.

NVD CVE pagehttps://nvd.nist.gov/vuln/detail/CVE-2025-14847 CVE API docshttps://nvd.nist.gov/developers/vulnerabilities Data feedshttps://nvd.nist.gov/vuln/data-feeds Cataloghttps://www.cisa.gov/known-exploited-vulnerabilities-catalog Data repositoryhttps://github.com/cisagov/kev-data cna@mongodb.comhttps://jira.mongodb.org/browse/SERVER-115508 af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2025/12/29/21 af854a3a-2127-422b-91ae-364da2661108https://www.smartkeyss.com/post/mongobleed-pre-auth-memory-disclosure-via-op_compressed-in-mongodb-cve-2025-14847 af854a3a-2127-422b-91ae-364da2661108https://www.vicarius.io/vsociety/posts/cve-2025-14847-detection-script-heap-memory-exposure-in-mongodb-server af854a3a-2127-422b-91ae-364da2661108https://www.vicarius.io/vsociety/posts/cve-2025-14847-mitigation-script-heap-memory-exposure-in-mongodb-server 134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-14847