How severe is CVE-2025-14847?

No CVSS score has been assigned to CVE-2025-14847 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2025-14847?

Affected package information for CVE-2025-14847 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2025-14847?

No fixed version has been published for CVE-2025-14847 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2025-14847 actively exploited in the wild?

Yes. There are 8 known exploit references for CVE-2025-14847, including . All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2025-14847?

CVE-2025-14847 has an EPSS (Exploit Prediction Scoring System) score of 62.8%, placing it in the 98th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is CVE-2025-14847 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2025-14847 (MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2025-12-29. CISA required all US federal civilian agencies to remediate this vulnerability by 2026-01-19. The required action was: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

When was CVE-2025-14847 published, and has it been updated?

CVE-2025-14847 was published on December 19, 2025 and was last updated on April 12, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2025-12-29 — agencies required to remediate by 2026-01-19

CVE-2025-14847

Also known asBIT-mongodb-2025-14847

Published

Dec 19, 2025

Updated

Apr 12, 2026

Affected

0 pkgs

Patched

None yet

Exploits

8 known

EPSS Exploitation Probability

via FIRST.org ↗

62.8%probability of exploitation in next 30 days

High Risk98th percentile+6.98%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

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.

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Black1hp/mongobleed-scanner

MongoDB CVE-2025-14847 Heap Memory Leak Scanner | OP_COMPRESSED zlib Vul

⭐ 36🍴 5Apr 2026

cybertechajju/CVE-2025-14847_Expolit

a critical memory disclosure vulnerability in MongoDB's zlib compression

⭐ 31🍴 3Jun 2026

ProbiusOfficial/CVE-2025-14847

poc for CVE-2025-14847

⭐ 25🍴 7Jun 2026

onewinner/CVE-2025-14847

MongoDB 内存泄露漏洞 (CVE-2025-14847) 检测工具

⭐ 14🍴 2Mar 2026

Security-Phoenix-demo/mongobleed-exploit-CVE-2025-14847

Exploit lab, docker and code scanner for mongobleed Vulnerability CVE-20

⭐ 13🍴 2Jun 2026

chinaxploiter/CVE-2025-14847-PoC

Academic proof-of-concept demonstrating CVE-2025-14847 for authorized se

⭐ 4🍴 0May 2026

franksec42/mongobleed-exploit-CVE-2025-14847

Explot, Lab, Scanner - external and docker container, for SMongobleed-CV

⭐ 3🍴 1Feb 2026

joshuavanderpoll/CVE-2025-14847

CVE-2025-14847 (MongoBleed)

⭐ 3🍴 0Jan 2026

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2025-14847 in your stack?

O3 detects CVE-2025-14847 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

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