Risk Letters

Exploited vulnerability

CVE-2025-14847

TLP:CLEAR

MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency Vulnerability

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.

Facts

  • Vendor: MongoDB
  • Product: MongoDB and MongoDB Server
  • CVSS: 8.7
  • EPSS (probability of exploitation within 30 days): 83.2 %
  • On CISA's Known Exploited Vulnerabilities list since: 29 December 2025
  • First known exploitation: 29 December 2025
  • CISA's deadline for US federal agencies: 19 January 2026
  • Weakness: CWE-130
  • First seen by Risk Letters: 29 December 2025

Members see which Nordic sectors the flaw hits, and what to do about it.

Get the full brief

Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD