CVE-2025-14847: 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.
| Vendor | MongoDB |
|---|---|
| Product | MongoDB and MongoDB Server |
| Date added to KEV | 2025-12-29 |
| Due date (BOD 22-01) | 2026-01-19 |
| Known ransomware campaign use | Unknown |
| CWE | CWE-130 |
| 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. |
What to do
- Identify every instance of MongoDB MongoDB and MongoDB Server in your environment (asset inventory, EDR, vulnerability scanner).
- Apply CISA's 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.
- Federal civilian agencies must act by 2026-01-19 under BOD 22-01; other organizations can use the same date as a target.
- Check the vendor advisory and NVD entry linked below for affected versions, then record the fix in your change log.
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Sources
- NVD entry for CVE-2025-14847 (severity scores, if any, live there)
- CISA KEV catalog entry
- https://jira.mongodb.org/browse/SERVER-115508
- https://nvd.nist.gov/vuln/detail/CVE-2025-14847