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.
  • 2,441 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: 2,441

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

2,441 internet-exposed hosts are running an affected version of CVE-2025-14847 right now.

across 73 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) @ focal2026-07-26ubuntu

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 45× in last 7d / 299× 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 617 total refreshes for this CVE.

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

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 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 ↗
  • GitHub PoCProbiusOfficial/CVE-2025-14847
    First seen Dec 26, 2025

    poc for 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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