CVE-2025-14847: listed in the CISA KEV catalog

CVE-2025-14847 · CVSS 7.5 HIGH · EPSS 83% · KEV 2025-12-29 · patch available

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.

Is CVE-2025-14847 exploited?

• Listed in the CISA KEV catalog on 2025-12-29.
• Federal remediation due 2026-01-19.
• Past that date by 298 days.
• EPSS puts exploitation in the next 30 days at 83%.
• Public exploit code: none found in monitored sources.
• Public detection rules exist.

Which products and versions are affected?

• MongoDB Inc. · MongoDB Server · >= 8.2, < 8.2.3, >= 8.0, < 8.0.17, >= 7.0, < 7.0.28, >= 6.0, < 6.0.27, >= 5.0, < 5.0.32, >= 4.4, < 4.4.30, +3 more

Is there a patch?

Yes. Update to one of these or later:

From MongoDB Inc.'s CVE record · MongoDB Inc. advisory

What PlainSec published about CVE-2025-14847

• Embedded MongoDB leaves Zenon users exposed (2026-08-07)

Primary sources

• NVD record
• CISA KEV catalog
• MongoDB Inc. advisory
• Metasploit: auxiliary/scanner/mongodb/cve_2025_14847_mongobleed
• Nuclei template

KEV and EPSS are re-checked daily. Record last updated 2026-09-22.