CVE-2025-14847
Publication date 19 December 2025
Last updated 2 January 2026
Ubuntu priority
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.
Read the notes from the security team
Why is this CVE high priority?
leaks sensitive info
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| mongodb | 25.10 questing | Not in release |
| 25.04 plucky | Not in release | |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release | |
| 20.04 LTS focal |
Vulnerable
|
|
| 18.04 LTS bionic |
Vulnerable
|
|
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty |
Not affected
|
Notes
emitorino
All MongoDB Community Server releases and patches issued after October 16, 2018, are licensed under the Server Side Public License (SSPL). Because the SSPL is not recognized as an open-source license by the Open Source Initiative (OSI), its terms are legally incompatible with the previous GNU Affero General Public License v3.0 (AGPL). All of the upstream commits for this issue are on branches licensed under mongodb's SSPL. zlib, rsync, klibc, and zsync were incorrectly associated with this CVE during initial triage and have been removed.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.5 · High
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |