CVE-2025-14847

CRITICALNVD 7.59.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2025-12-29), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.5 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 5 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • 4,667 internet-exposed hosts are running an affected version right now
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 83%CVSS: 7.5Exploit: cisa kev · ssvc active · Metasploit · epss top5pct · epss high · public exploitExposed: 4,667

A fix is available — apply it.

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.

Live · internet exposure

4,667 internet-exposed hosts are running an affected version of CVE-2025-14847 right now.

across 84 countries (United States, China, Germany, France, Singapore)top: mongodb
See the live KEV-Exposure radar →Found passively from public internet-scan data — aggregate, host-redacted.

EchelonGraph is the only CVE feed that fuses live vulnerability intelligence with its own live internet-exposure radar — so you see not just that a CVE is exploited, but how much of the internet is exposed to it right now.

CVSS v3
7.5
EG Score
9.0(high)
EG Risk
96(Attend)
EG Risk 96/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
83%
EPSS %ILE
100%
KEV
⚠ Exploited

Published

December 19, 2025

Last Modified

January 13, 2026

Advisory Details (6)

Auto-updated Jun 6, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-14847
generic🔴 Active Exploitation

CVE-2025-14847 Mitigation Script - Heap Memory Exposure in MongoDB Server - vsociety

https://www.vicarius.io/vsociety/posts/cve-2025-14847-mitigation-script-heap-memory-exposure-in-mongodb-server
generic🔴 Active Exploitation

CVE-2025-14847 Detection Script - Heap Memory Exposure in MongoDB Server - vsociety

https://www.vicarius.io/vsociety/posts/cve-2025-14847-detection-script-heap-memory-exposure-in-mongodb-server
generic

MongoBleed: Pre-Auth Memory Disclosure via OP_COMPRESSED in MongoDB (CVE-2025-14847)

https://www.smartkeyss.com/post/mongobleed-pre-auth-memory-disclosure-via-op_compressed-in-mongodb-cve-2025-14847
generic🟡 PoC Available

oss-security - "MongoBleed" CVE-2025-14847 in many versions of MongoDB

http://www.openwall.com/lists/oss-security/2025/12/29/21
generic

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https://jira.mongodb.org/browse/SERVER-115508

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntumongodb-server-core (1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1) @ focal2026-09-06ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 71× in last 7d / 367× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 1,107 total refreshes for this CVE.

  1. 2026-09-06 13:46 UTCEPSS rescore
  2. 2026-09-06 11:08 UTCVendor advisory
  3. 2026-09-06 11:08 UTCGHSA enrichment
  4. 2026-09-06 07:00 UTCVendor advisory
  5. 2026-09-06 07:00 UTCGHSA enrichment
  6. 2026-09-06 02:52 UTCVendor advisory
  7. 2026-09-06 02:52 UTCGHSA enrichment
  8. 2026-09-05 22:44 UTCVendor advisory
  9. 2026-09-05 22:44 UTCGHSA enrichment
  10. 2026-09-05 18:36 UTCEG score recompute
  11. 2026-09-05 18:36 UTCVendor advisory
  12. 2026-09-05 18:35 UTCGHSA enrichment
  13. 2026-09-05 14:27 UTCGHSA enrichment
  14. 2026-09-05 10:19 UTCGHSA enrichment
  15. 2026-09-05 06:11 UTCVendor advisory
  16. 2026-09-05 06:11 UTCGHSA enrichment
  17. 2026-09-05 02:02 UTCVendor advisory
  18. 2026-09-05 02:02 UTCGHSA enrichment
  19. 2026-09-04 21:54 UTCVendor advisory
  20. 2026-09-04 21:54 UTCGHSA enrichment
  21. 2026-09-04 17:46 UTCGHSA enrichment
  22. 2026-09-04 17:38 UTCCISA KEV update
  23. 2026-09-04 13:38 UTCGHSA enrichment
  24. 2026-09-04 09:30 UTCGHSA enrichment
  25. 2026-09-04 05:22 UTCEG score recompute
Show 75 more
  1. 2026-09-04 05:22 UTCGHSA enrichment
  2. 2026-09-04 05:05 UTCEPSS rescore
  3. 2026-09-04 01:14 UTCGHSA enrichment
  4. 2026-09-03 21:05 UTCGHSA enrichment
  5. 2026-09-03 16:57 UTCGHSA enrichment
  6. 2026-09-03 12:49 UTCGHSA enrichment
  7. 2026-09-03 08:41 UTCVendor advisory
  8. 2026-09-03 08:41 UTCGHSA enrichment
  9. 2026-09-03 04:32 UTCVendor advisory
  10. 2026-09-03 04:32 UTCGHSA enrichment
  11. 2026-09-03 00:22 UTCGHSA enrichment
  12. 2026-09-02 20:14 UTCGHSA enrichment
  13. 2026-09-02 17:33 UTCCISA KEV update
  14. 2026-09-02 16:05 UTCVendor advisory
  15. 2026-09-02 16:05 UTCGHSA enrichment
  16. 2026-09-02 11:56 UTCVendor advisory
  17. 2026-09-02 11:56 UTCGHSA enrichment
  18. 2026-09-02 07:46 UTCGHSA enrichment
  19. 2026-09-02 03:38 UTCVendor advisory
  20. 2026-09-02 03:38 UTCGHSA enrichment
  21. 2026-09-01 23:31 UTCVendor advisory
  22. 2026-09-01 23:31 UTCGHSA enrichment
  23. 2026-09-01 19:21 UTCGHSA enrichment
  24. 2026-09-01 15:13 UTCGHSA enrichment
  25. 2026-09-01 11:03 UTCGHSA enrichment
  26. 2026-09-01 06:55 UTCEG score recompute
  27. 2026-09-01 06:55 UTCGHSA enrichment
  28. 2026-09-01 04:38 UTCEPSS rescore
  29. 2026-09-01 02:47 UTCVendor advisory
  30. 2026-09-01 02:47 UTCGHSA enrichment
  31. 2026-08-31 22:39 UTCVendor advisory
  32. 2026-08-31 22:39 UTCGHSA enrichment
  33. 2026-08-31 18:31 UTCGHSA enrichment
  34. 2026-08-31 14:19 UTCCISA KEV update
  35. 2026-08-31 14:19 UTCGHSA enrichment
  36. 2026-08-31 10:10 UTCGHSA enrichment
  37. 2026-08-31 06:03 UTCVendor advisory
  38. 2026-08-31 06:02 UTCGHSA enrichment
  39. 2026-08-31 01:55 UTCVendor advisory
  40. 2026-08-31 01:55 UTCGHSA enrichment
  41. 2026-08-30 21:47 UTCEG score recompute
  42. 2026-08-30 21:47 UTCVendor advisory
  43. 2026-08-30 21:47 UTCGHSA enrichment
  44. 2026-08-30 19:16 UTCEPSS rescore
  45. 2026-08-30 17:39 UTCVendor advisory
  46. 2026-08-30 17:39 UTCGHSA enrichment
  47. 2026-08-30 13:31 UTCVendor advisory
  48. 2026-08-30 13:31 UTCGHSA enrichment
  49. 2026-08-30 09:23 UTCVendor advisory
  50. 2026-08-30 09:23 UTCGHSA enrichment
  51. 2026-08-30 05:13 UTCVendor advisory
  52. 2026-08-30 05:13 UTCGHSA enrichment
  53. 2026-08-30 01:05 UTCVendor advisory
  54. 2026-08-30 01:05 UTCGHSA enrichment
  55. 2026-08-29 20:57 UTCVendor advisory
  56. 2026-08-29 20:57 UTCGHSA enrichment
  57. 2026-08-29 16:49 UTCVendor advisory
  58. 2026-08-29 16:48 UTCGHSA enrichment
  59. 2026-08-29 12:41 UTCVendor advisory
  60. 2026-08-29 12:41 UTCGHSA enrichment
  61. 2026-08-29 08:33 UTCVendor advisory
  62. 2026-08-29 08:33 UTCGHSA enrichment
  63. 2026-08-29 04:25 UTCGHSA enrichment
  64. 2026-08-29 00:16 UTCEG score recompute
  65. 2026-08-29 00:16 UTCVendor advisory
  66. 2026-08-29 00:16 UTCGHSA enrichment
  67. 2026-08-28 21:40 UTCEPSS rescore
  68. 2026-08-28 20:07 UTCGHSA enrichment
  69. 2026-08-28 16:00 UTCVendor advisory
  70. 2026-08-28 16:00 UTCGHSA enrichment
  71. 2026-08-28 11:52 UTCVendor advisory
  72. 2026-08-28 11:52 UTCGHSA enrichment
  73. 2026-08-28 07:44 UTCVendor advisory
  74. 2026-08-28 07:44 UTCGHSA enrichment
  75. 2026-08-28 03:37 UTCVendor advisory

Publicly available exploits

(10 references)

Working exploit code is in the public domain (10 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCsho-luv/MongoBleed
    First seen Feb 7, 2026

    CVE-2025-14847 (MongoBleed) scanner and exploit tool. Unauthenticated MongoDB heap memory leak via zlib decompression. Detection, memory extraction, credential parsing, CIDR/batch scanning, Nuclei templates, and CTF lab included

    Open source ↗
  • GitHub PoCpeakcyber-security/CVE-2025-14847
    First seen Jan 12, 2026

    CVE-2025-14847 | MongoBleed vulnerability proof of concept project

    Open source ↗
  • GitHub PoCSecurity-Phoenix-demo/mongobleed-exploit-CVE-2025-14847
    First seen Dec 29, 2025

    Exploit lab, docker and code scanner for mongobleed Vulnerability CVE-2025-14847 plus Phoenix Security Sync tools

    Open source ↗
  • GitHub PoCchinaxploiter/CVE-2025-14847-PoC
    First seen Dec 29, 2025

    Academic proof-of-concept demonstrating CVE-2025-14847 for authorized security research.

    Open source ↗
  • GitHub PoCjoshuavanderpoll/CVE-2025-14847
    First seen Dec 29, 2025

    CVE-2025-14847 (MongoBleed)

    Open source ↗
  • GitHub PoCcodeb0ssx/CVE-2025-14847-PoC
    First seen Dec 29, 2025

    Academic proof-of-concept demonstrating CVE-2025-14847 for authorized security research.

    Open source ↗
  • GitHub PoCfranksec42/mongobleed-exploit-CVE-2025-14847
    First seen Dec 28, 2025

    Explot, Lab, Scanner - external and docker container, for SMongobleed-CVE-2025-14847 plus phoenix security uploader

    Open source ↗
  • GitHub PoCBlack1hp/mongobleed-scanner
    First seen Dec 27, 2025

    MongoDB CVE-2025-14847 Heap Memory Leak Scanner | OP_COMPRESSED zlib Vulnerability | Bug Bounty & Red Team Tool

    Open source ↗
  • GitHub PoCcybertechajju/CVE-2025-14847_Expolit
    First seen Dec 27, 2025

    a critical memory disclosure vulnerability in MongoDB's zlib compression handling. This tool allows security researchers to extract sensitive data from vulnerable MongoDB instances.

    Open source ↗
  • GitHub PoCnma-io/mongobleed
    First seen Dec 27, 2025

    golang test tool for mongobleed (cve-2025-14847)

    Open source ↗

Frequently asked(6)

What is CVE-2025-14847?
CVE-2025-14847 is a critical vulnerability published on December 19, 2025. 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,…
When was CVE-2025-14847 disclosed?
CVE-2025-14847 was first published in the National Vulnerability Database on December 19, 2025, with the most recent update on January 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-14847 actively exploited?
Yes. CISA added CVE-2025-14847 to the Known Exploited Vulnerabilities catalog on December 29, 2025, affecting MongoDB MongoDB and MongoDB Server. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2025-14847?
CVE-2025-14847 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2025-14847?
CVE-2025-14847 affects MongoDB MongoDB and MongoDB Server. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2025-14847?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-14847, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2025-14847

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