December 29, 2025 · Applied Cybernetics Group
CVE-2025-14847 — MongoDB MongoDB and MongoDB Server
MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency Vulnerability
- Added to KEV
2025-12-29- Federal due date
2026-01-19- Vendor
- MongoDB
- Product
- MongoDB and MongoDB Server
- EPSS
- 98.4th percentile (score 0.628, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2025-14847
CISA short 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.