Security readout for executives and security teams
CVE-2025-14847 is a MongoDB Server flaw where unauthenticated clients may read uninitialized heap memory through malformed zlib-compressed protocol headers. The main business risk is unintended data exposure from database server memory. Sources rate it high severity with network, low-complexity, no-auth access, but the bundle does not show confirmed active exploitation. Exposure applies to MongoDB Server versions listed as affected, especially instances reachable from untrusted networks. Affected branches include 3.6, 4.0, 4.2, 4.4 before 4.4.30, 5.0 before 5.0.32, 6.0 before 6.0.27, 7.0 before 7.0.28, 8.0 before 8.0.17, and 8.2 before 8.2.3. Prioritize remediation for internet-facing or partner-accessible MongoDB servers because no authentication is required and confidentiality impact is high. Treat internal-only systems as important but sequence by network reachability and data sensitivity. Older 3.6, 4.0, and 4.2 deployments need special attention because the bundle names no fixed versions for them. Mitigation focus: Upgrade MongoDB Server 8.2 to 8.2.3 or later.; Upgrade MongoDB Server 8.0 to 8.0.17 or later.; Upgrade MongoDB Server 7.0 to 7.0.28 or later..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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Open ATT&CK lookupCVE-2025-14847 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8.7 (4.0)
- Known Exploited
- Yes
- Published
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
CNA and ADP enrichment extracted from CVE v5
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CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
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——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
8.7HighVector: 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
Source materials
- CVE List V5 sourceCVE List V5
- https://jira.mongodb.org/browse/SERVER-115508CVE reference
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-14847CVE reference · government-resource
- https://www.vicarius.io/vsociety/posts/cve-2025-14847-detection-script-heap-memory-exposure-in-mongodb-serverCVE reference
- https://www.vicarius.io/vsociety/posts/cve-2025-14847-mitigation-script-heap-memory-exposure-in-mongodb-serverCVE reference
- https://www.smartkeyss.com/post/mongobleed-pre-auth-memory-disclosure-via-op_compressed-in-mongodb-cve-2025-14847CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Handling of Length Parameter Inconsistency
Improper Handling of Length Parameter Inconsistency represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.