CVE-2025-14847

7.5 HIGH CISA KEV - Actively Exploited
Published: December 19, 2025 Modified: January 13, 2026
View on NVD

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://jira.mongodb.org/browse/SERVER-115508
Source: cna@mongodb.com
Issue Tracking Patch Vendor Advisory
http://www.openwall.com/lists/oss-security/2025/12/29/21
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List
https://www.smartkeyss.com/post/mongobleed-pre-auth-memory-disclosure-via-op_compressed-in-mongodb-cve-2025-14847
Source: af854a3a-2127-422b-91ae-364da2661108
Technical Description Third Party Advisory
https://www.vicarius.io/vsociety/posts/cve-2025-14847-detection-script-heap-memory-exposure-in-mongodb-server
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory
https://www.vicarius.io/vsociety/posts/cve-2025-14847-mitigation-script-heap-memory-exposure-in-mongodb-server
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-14847
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Third Party Advisory US Government Resource

6 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
71.2%
99th percentile
Exploitation Status
Actively Exploited
Remediation due: 2026-01-19

Weaknesses (CWE)

CWE-130

Affected Vendors

mongodb

Related CVEs

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CVE-2026-4477 3.1
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