CVE-2025-6706 Running certain aggregation operations with the SBE engine may lead to unexpected behavior on MongoDB Server
An authenticated user can cause a MongoDB Server crash via a use-after-free vulnerability in the SBE engine during specific aggregation operations.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-6706?
CVE-2025-6706 is a medium-severity use after free vulnerability in Mongodb Mongodb, published on 26 Jun 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An authenticated user may trigger a use after free that may result in MongoDB Server crash and other unexpected behavior, even if the user does not have authorization to shut down a server. The crash is triggered on affected versions by issuing an aggregation framework operation using a specific combination of rarely-used aggregation pipeline expressions. This issue affects MongoDB Server v6.0 version prior to 6.0.21, MongoDB Server v7.0 version prior to 7.0.17 and MongoDB Server v8.0 version prior to 8.0.4 when the SBE engine is enabled.
Weakness: CWE-416
Which versions are affected by CVE-2025-6706?
1 open source package ship an affected version, including mongodb. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mongodb Bitnami | From 6.0.0 | 6.0.21, 7.0.17, 8.0.4 |
Products include Mongodb Mongodb.
How do I fix CVE-2025-6706?
Upgrade mongodb to a fixed version for your release line: 6.0.21, 7.0.17 or 8.0.4.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2025-6706 being exploited?
There is no known exploitation of CVE-2025-6706 in the wild and no public exploit code.
Other vulnerabilities in Mongodb Mongodb
- CVE-2025-14847 MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency
- CVE-2026-82067 Auth bypass in MongoDB Server
- CVE-2026-13072 MongoDB Improper Input Validation in Compute Mode External Data Processing Leading to Memory Corruption
- CVE-2017-15535 Denial of service in n/a
- CVE-2026-18691 Improper Authentication in MongoDB Intra-Cluster Connections Allows Credential Exposure
Sources
Also known as BIT-mongodb-2025-6706, GHSA-9pjr-27w4-fm42, MINI-rcp9-8c3w-j3w5, UBUNTU-CVE-2025-6706.