Security readout for executives and security teams
Plain-English summary
An authenticated MongoDB user can cause a denial of service by submitting specially crafted database queries using the $mod operator. The issue is availability-focused: sources do not indicate data theft or tampering. It affects older MongoDB Server 3.6, 4.0, 4.2, and 4.4 releases before the listed fixed versions.
Executive priority
Treat this as a moderate availability risk. Patch affected MongoDB servers in normal vulnerability remediation cycles, faster for shared, business-critical, or broadly reachable databases where a low-privileged query user could disrupt service.
Technical view
CVE-2019-2392 is an integer overflow issue, CWE-190, in MongoDB Server query handling for $mod with overflowing negative values. CVSS 3.1 is 6.5: network reachable, low privileges required, no user interaction, high availability impact, and no confidentiality or integrity impact.
Likely exposure
Exposure is most likely where MongoDB Server runs v4.4 before 4.4.1, v4.2 before 4.2.9, v4.0 before 4.0.20, or v3.6 before 3.6.20, and query-capable users or applications can reach the database.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. Exploitation requires an account or application path authorized to issue database queries. The likely operational outcome is service disruption rather than data compromise, based on the CVSS vector and description.
Researcher notes
Evidence is limited to the CVE record, CVE List data, and MongoDB Jira reference. The available sources identify affected versions and the denial-of-service condition, but do not provide exploit maturity, detailed root cause, or operational workarounds beyond upgrading past fixed versions.
Mitigation direction
- Upgrade MongoDB Server to 4.4.1, 4.2.9, 4.0.20, 3.6.20, or later supported versions.
- Prioritize production and externally reachable database environments first.
- Review database account permissions and reduce query access where it is broader than needed.
- Check MongoDB vendor guidance for branch-specific upgrade constraints before maintenance.
Validation and detection
- Inventory MongoDB Server versions across production, staging, and backup environments.
- Confirm affected branches are not running versions earlier than the fixed releases.
- Identify users, services, or applications with permission to issue database queries.
- Review operational logs for unexplained MongoDB crashes or availability incidents around query activity.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-190: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupDatabase behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2019-2392 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://jira.mongodb.org/browse/SERVER-43699CVE reference · x_refsource_CONFIRM
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.
Integer Overflow or Wraparound
Integer Overflow or Wraparound represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.