High severity7.5CISA KEVOSV Advisory· Published Dec 19, 2025· Updated Jun 17, 2026

CVE-2025-14847

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

MongoDB/MongoDBOSV3 versions
r5.0.0, r5.0.1, r5.0.1-rc0, …+ 2 more
- (no CPE)range: r5.0.0, r5.0.1, r5.0.1-rc0, …
- cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*range: >=3.6.0,<4.4.30
- cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:*range: >=6.0.0,<6.0.27
MongoDB/Serverllm-fuzzy
Range: >=3.6.0 & <=4.2.0; >=4.4.0 & <4.4.30; >=5.0.0 & <5.0.32; >=6.0.0 & <6.0.27; >=7.0.0 & <7.0.28; >=8.0.0 & <8.0.17; >=8.2.0 & <8.2.3
osv-coords23 versions
pkg:apk/chainguard/mongo-5.0 pkg:apk/chainguard/mongo-6.0 pkg:apk/chainguard/mongo-7.0 pkg:apk/chainguard/mongo-8.0 pkg:apk/chainguard/mongod-5.0 pkg:apk/chainguard/mongod-5.0-bitnami-compat pkg:apk/chainguard/mongod-5.0-iamguarded-compat pkg:apk/chainguard/mongod-6.0 pkg:apk/chainguard/mongod-6.0-bitnami-compat pkg:apk/chainguard/mongod-6.0-iamguarded-compat pkg:apk/chainguard/mongod-7.0 pkg:apk/chainguard/mongod-7.0-bitnami-compat pkg:apk/chainguard/mongod-7.0-iamguarded-compat pkg:apk/chainguard/mongod-8.0 pkg:apk/chainguard/mongod-8.0-bitnami-compat pkg:apk/chainguard/mongod-8.0-iamguarded-compat pkg:apk/chainguard/mongos pkg:apk/chainguard/mongos-5.0 pkg:apk/chainguard/mongos-6.0 pkg:apk/chainguard/mongos-7.0 pkg:apk/chainguard/mongos-8.0 pkg:apk/chainguard/mongos-8.0-iamguarded-compat pkg:bitnami/mongodb
< 5.0.32-r0+ 22 more
- (no CPE)range: < 5.0.32-r0
- (no CPE)range: < 6.0.27-r0
- (no CPE)range: < 7.0.28-r0
- (no CPE)range: < 8.0.17-r0
- (no CPE)range: < 5.0.32-r0
- (no CPE)range: < 5.0.32-r0
- (no CPE)range: < 5.0.32-r0
- (no CPE)range: < 6.0.27-r0
- (no CPE)range: < 6.0.27-r0
- (no CPE)range: < 6.0.27-r0
- (no CPE)range: < 7.0.28-r0
- (no CPE)range: < 7.0.28-r0
- (no CPE)range: < 7.0.28-r0
- (no CPE)range: < 8.0.17-r0
- (no CPE)range: < 8.0.17-r0
- (no CPE)range: < 8.0.17-r0
- (no CPE)range: < 8.0.17-r0
- (no CPE)range: < 5.0.32-r0
- (no CPE)range: < 6.0.27-r0
- (no CPE)range: < 7.0.28-r0
- (no CPE)range: < 8.0.17-r0
- (no CPE)range: < 8.0.17-r0
- (no CPE)range: >= 4.4.0, < 4.4.30

Patches

Vulnerability mechanics

References

jira.mongodb.org/browse/SERVER-115508nvdIssue TrackingPatchVendor Advisory
www.vicarius.io/vsociety/posts/cve-2025-14847-detection-script-heap-memory-exposure-in-mongodb-servernvdExploitThird Party Advisory
www.vicarius.io/vsociety/posts/cve-2025-14847-mitigation-script-heap-memory-exposure-in-mongodb-servernvdExploitThird Party Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalognvdThird Party AdvisoryUS Government Resource
www.smartkeyss.com/post/mongobleed-pre-auth-memory-disclosure-via-op_compressed-in-mongodb-cve-2025-14847nvdTechnical DescriptionThird Party Advisory
www.openwall.com/lists/oss-security/2025/12/29/21nvdMailing List

News mentions

New ChocoPoC RAT Targets Vulnerability Researchers via Fake PoC Exploit Repos
The Hacker News · Jul 2, 2026
ChocoPoc malware delivered via trojanized exploits on GitHub
BleepingComputer · Jul 1, 2026
New ChocoPoC malware targets researchers via trojanized PoC exploits
BleepingComputer · Jul 1, 2026
ABB Ability Zenon
CISA ICS Advisories

cvss	0.488
epss	0.066
exploit	0.030
kev	0.120
patch	-0.070
ransomware	0.000