Use-after-free in MongoDB - CVE-2025-11979
Published: February 23, 2026
Vulnerability identifier: #VU123127
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-11979
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: MongoDB, Inc.
Affected software:
MongoDB
MongoDB
Detailed vulnerability description
The vulnerability allows a remote user to perform a denial of service attack.
The vulnerability exists due to a use-after-free error. A remote user can crash the MongoDB server by causing buffer over-read by issuing a DDL operation while queries are being issued, under some conditions.
How to mitigate CVE-2025-11979
Install updates from vendor's website.