CVE-2025-14847

8.7 HIGH 83% exploit odds exploited in the wild Fix listed Memory safety Server

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure.
In the wild: CISA lists this as exploited in real attacks. Treat as urgent.
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2025-12-17 18:56 UTC ReservedThe CVE id was reserved by its CNA
2025-12-19 11:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2025-12-29 Exploited in the wildAdded to CISA's Known Exploited Vulnerabilities list
2026-01-19 Remediation deadlineCISA's due date for federal agencies to fix it
2026-06-17 08:36 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: yes, CISA lists it. This puts it above everything that is not.
Exploit odds: 83.2% in the next 30 days (EPSS).
Severity: 8.7 HIGH (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2025-12-19 11:15 UTC
Last modified: 2026-06-17 08:36 UTC
Added to CISA KEV: 2025-12-29
Exploit probability: 83.2% · EPSS, next 30 days
Weakness: CWE-130
Record status: Analyzed

Affected

Mongodb < 4.4.30
Mongodb < 5.0.32
Mongodb < 6.0.27
Mongodb < 7.0.28
Mongodb < 8.0.17
Mongodb < 8.2.3

Attack profile CVSS 4.0 · 8.7

Attack vector: Network
Complexity: Low
Attack requirements: None
Privileges needed: None
User interaction: None
Confidentiality: High
Integrity: None
Availability: None

Raw vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2025-14847.md and follow it. Check whether this project is affected by CVE-2025-14847. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

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

References

NVD record · CVE.org record