Full Report
Database platform MongoDB disclosed CVE-2025-14847, called MongoBleed. This is an unauthenticated memory disclosure vulnerability with a CVSS score of 8.7. The post Threat Brief: MongoDB Vulnerability (CVE-2025-14847) appeared first on Unit 42.
Analysis Summary
# Vulnerability: MongoBleed Unauthenticated Memory Disclosure
## CVE Details
- **CVE ID:** CVE-2025-14847
- **CVSS Score:** 8.7 (High)
- **CWE:** CWE-200 (Information Exposure) / CWE-125 (Out-of-bounds Read)
## Affected Systems
- **Products:** MongoDB Server (Community and Enterprise editions)
- **Versions:**
- 4.4.0 through 4.4.29
- 5.0.0 through 5.0.31
- 6.0.0 through 6.0.19
- 7.0.0 through 7.0.16
- 8.0.0 through 8.0.4
- **Configurations:** Systems that are network-accessible. The vulnerability does not require authentication or specific non-default configurations to be exploited.
## Vulnerability Description
CVE-2025-14847, dubbed "MongoBleed," is a heap-based buffer over-read vulnerability. It occurs when the MongoDB server fails to properly validate the length of input provided in a specific database command. An unauthenticated remote attacker can send a specially crafted request that triggers the server to read beyond the intended buffer. This results in the disclosure of sensitive server memory contents (up to 32KB per request) to the attacker.
## Exploitation
- **Status:** Vulnerability is publicly disclosed; Proof of Concept (PoC) code is available in the security community. No confirmed reports of widespread exploitation in the wild at the time of this brief.
- **Complexity:** Low
- **Attack Vector:** Network (Remote)
## Impact
- **Confidentiality:** High (Potential exposure of session tokens, credentials, and data fragments stored in memory).
- **Integrity:** None
- **Availability:** None
## Remediation
### Patches
MongoDB has released the following patched versions. Users should upgrade immediately to the corresponding branch:
- **8.0.5** or later
- **7.0.17** or later
- **6.0.20** or later
- **5.0.32** or later
- **4.4.30** or later
### Workarounds
- There are no direct software workarounds that eliminate the flaw; patching is the only definitive fix.
- **Network Segmentation:** Ensure MongoDB instances are not exposed to the public internet.
- **Access Control Lists (ACLs):** Restrict access to the database ports (typically TCP 27017) to known, trusted IP addresses only.
## Detection
- **Indicators of Compromise:** Unusual spikes in network egress traffic from the MongoDB port or repeated connections from unrecognized IP addresses.
- **Detection methods and tools:**
- Use vulnerability scanners (e.g., Prisma Cloud, Tenable, Qualys) to identify outdated MongoDB versions.
- Monitor application logs for segmentation faults or unexpected server restarts which may occur if exploitation attempts cause instability.
- Palo Alto Networks customers can use TP (Threat Prevention) signatures and Advanced URL Filtering.
## References
- **Vendor Advisory:** hxxps[://]www[.]mongodb[.]com/alerts
- **Unit 42 Post:** hxxps[://]unit42[.]paloaltonetworks[.]com/mongodb-vulnerability-cve-2025-14847/
- **NVD Entry:** hxxps[://]nvd[.]nist[.]gov/vuln/detail/CVE-2025-14847