Zlib compressed protocol header length confusion may allow memory read
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
Mismatched 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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Active
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| MongoDB | MongoDB Server | 8.2 to before 8.2.3; 8.0 to before 8.0.17; 7.0 to before 7.0.28; 6.0 to before 6.0.27; 5.0 to before 5.0.32; 4.4 to before 4.4.30; 4.2; 4.0; 3.6 | 8.2.3, 8.0.17, 7.0.28, 6.0.27, 5.0.32, 4.4.30 | Patch available | CNA |
- MongoDB Server VendorMongoDB Affected 8.2 to before 8.2.3; 8.0 to before 8.0.17; 7.0 to before 7.0.28; 6.0 to before 6.0.27; 5.0 to before 5.0.32; 4.4 to before 4.4.30; 4.2; 4.0; 3.6 Fixed in 8.2.3, 8.0.17, 7.0.28, 6.0.27, 5.0.32, 4.4.30 Patch available CNA
CPE configurations NVD · 2
Remediation
- Fix · CNA MongoDB Server (MongoDB Inc.) Fixed in 8.2.3, 8.0.17, 7.0.28, 6.0.27, 5.0.32, 4.4.30
Timeline
- 2025-12-29 Added to CISA KEV
- 2026-10-02 Threatist record created from CVE-2025-14847
- 2026-10-03 Alias added: GHSA-4742-mr57-2r9j
References
Exploit 2
More Mongodb vulnerabilities
- TI-2013-01669 MongoDB before 2.0.9 and 2.2.x before 2.2.4 does not properly validate requests to the… CVSS 2.0MEDIUM 6.0
- TI-2026-56639 Uncontrolled Resource Consumption in MongoDB Sharded Cluster Router Allows Unauthenticated Denial of Service CVSS 4.0HIGH 8.7
- TI-2026-56628 Reachable assertion in MongoDB Server CVSS 4.0HIGH 8.7
- TI-2026-15322 Improper Input Validation in MongoDB Aggregation Framework Allows Unauthenticated Denial of Service on mongos CVSS 4.0HIGH 8.7
- TI-2026-08537 Unbounded recursion in BSONColumn interleaved-reference causes pre-auth stack overflow CVSS 4.0HIGH 8.7
- TI-2025-02695 MongoDB Server running on Linux may allow unexpected connections where intermediate certificates are revoked CVSS 3.1CRITICAL 9.8
Sources
- CVE-2025-14847 · CVE Program
- CVE-2025-14847 · NVD
- CISA Known Exploited Vulnerabilities
- FIRST EPSS
- GHSA-4742-mr57-2r9j · GitHub Advisory Database · CC BY 4.0
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