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CVE Watch—

CVE-2025-14847

MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency Vulnerability

CVSS

—

No CVSS

EPSS

83.2%

p100

KEV

YES

Dec 29, 2025

Exploit Today

80

0-100

Published: — · Last modified: —

EPSS · 30d
83.0%EPSS · 30 days83.2%
2026-08-022026-08-31
KEV catalog record

Product

MongoDB / MongoDB and MongoDB Server

Vulnerability

MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency Vulnerability

Added to KEV

Dec 29, 2025

Remediate by

Jan 19, 2026

Known ransomware use

No

Summary description

MongoDB Server contains an improper handling of length parameter inconsistency vulnerability in Zlib compressed protocol headers. This vulnerability may allow a read of uninitialized heap memory by an unauthenticated client.

Required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notes

This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://jira.mongodb.org/browse/SERVER-115508 ; https://nvd.nist.gov/vuln/detail/CVE-2025-14847

Related CVEs

No related CVEs by CWE or product.