# CVE-2025-14847: Zlib compressed protocol header length confusion may allow memory read

> CVE-2025-14847: Zlib compressed protocol header length confusion may allow memory read. CVSS 7.5 (CVSS 3.1), in CISA KEV, named in 1 status incident(s).

Canonical: https://rewindex.com/cve/CVE-2025-14847
Last updated: 2026-06-17T08:36:38Z

- Published: 2025-12-19 11:00 UTC · Updated: 2026-06-17 08:36 UTC · Assigner: mongodb
- CVSS: 7.5 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS: 83.2%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2025-12-29, federal due date 2026-01-19, ransomware use: Unknown
- CWE: CWE-130

## Description

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.

## CISA 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.

## Affected vendors and products

- MongoDB Inc.: MongoDB Server

## Tracked companies

- [MongoDB Atlas](https://rewindex.com/company/mongodb-atlas.md)

## Status incidents that name it

- 2025-12-30 02:14 UTC [Aptible: CVE-2025-14847: MongoDB unauthenticated information leak](https://rewindex.com/company/aptible/incidents/mqm47ykl80d7.md) (says not affected, matched “not vulnerable” elsewhere in the notice): “CVE-2025-14847: MongoDB unauthenticated information leak This incident has been resolved. This incident has been resolved. The…”

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-14847)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-14847)
- [https://jira.mongodb.org/browse/SERVER-115508](https://jira.mongodb.org/browse/SERVER-115508)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-14847 · Markdown: https://rewindex.com/cve/CVE-2025-14847.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-14847 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T04:04:13.470Z