CVE-2025-14847
MongoDB — MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency Vulnerability
MongoDB · CWE-130 · in CISA KEV since 2025-12-29
EVRS 84 of 100 Urgent
Patch This Cycle
Rank 494 of 2,954 tracked
Why it scores 84
Evidence available: 6 of 7 signalsListed in the CISA KEV catalog, and an EPSS probability of 0.832.
- CISA KEVApplied
- RansomwareDid not apply
- Vendor exploitationDid not apply
- EPSSApplied
- Microsoft Exploitability IndexNot applicable
- Pre-patch disclosureNo data
- KEV recencyDid not apply
- CVSSApplied
The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data
Fix
Patch or fixed version identifiedCISA required action
- 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
- nvd.nist.gov/…/CVE-2025-14847
Fixed in
mongodb -> 1:3.6.3-0ubuntu1.4+esm2 | mongodb -> 1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1
Affected versions
- mongodb
>= 3.6.0 < 4.4.30>= 5.0.0 < 5.0.32>= 6.0.0 < 6.0.27>= 7.0.0 < 7.0.28>= 8.0.0 < 8.0.17>= 8.2.0 < 8.2.3
Remediation
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Fixed versions from NVD.
Evidence
Each value with its source| Measure | Value | Source |
|---|---|---|
| CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. | 8.7 | NVD |
| FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. | 0.832 (99.68th pctl) | FIRST EPSS |
| Actively exploitedWhether a source of record has confirmed attacks using it in the wild. | Confirmed | CISA KEV |
| Ransomware campaign useWhether CISA has seen ransomware operators use it. | Unknown or none | CISA KEV |
| CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. | 2026-01-19 · CISA federal deadline · Overdue by 9 months | CISA KEV |
| Public exploit moduleA module existing is not the same as active exploitation. | Public module exists | Metasploit |
| EUVD cross-referenceENISA's record: CVSS 8.7 (v4.0), assigned by mongodb. | Listed | ENISA EUVD |
Description
NVDMismatched length fields in Zlib compressed protocol headers may allow a read of uninitialized heap memory by an unauthenticated client. This issue affects all MongoDB Server v7.0 prior to 7.0.28 versions, MongoDB Server v8.0 versions prior to 8.0.17, MongoDB Server v8.2 versions prior to 8.2.3, MongoDB Server v6.0 versions prior to 6.0.27, MongoDB Server v5.0 versions prior to 5.0.32, MongoDB Server v4.4 versions prior to 4.4.30, MongoDB Server v4.2 versions greater than or equal to 4.2.0, MongoDB Server v4.0 versions greater than or equal to 4.0.0, and MongoDB Server v3.6 versions greater than or equal to 3.6.0.
What CISA says to do
- 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
- nvd.nist.gov/…/CVE-2025-14847
Public module
Metasploit lists a public normal-rank module for this CVE: MongoDB Memory Disclosure (CVE-2025-14847) - Mongobleed (scanner/mongodb/cve_2025_14847_mongobleed). A module existing is not the same as active exploitation; see metasploit.com.