Improper Handling of Length Parameter Inconsistency in MongoDB - CVE-2025-14847
Published: December 23, 2025 / Updated: February 11, 2026
Vulnerability identifier: #VU120254
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/U:Amber
CVE-ID: CVE-2025-14847
CWE-ID: CWE-130
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: MongoDB, Inc.
Affected software:
MongoDB
MongoDB
Detailed vulnerability description
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to mismatched length fields in Zlib compressed protocol headers. A remote non-authenticated client can read parts of uninitialized heap memory and gain access to sensitive information.
How to mitigate CVE-2025-14847
Install updates from vendor's website.