Security readout for executives and security teams
Plain-English summary
CVE-2019-2393 is a MongoDB Server denial-of-service flaw. A user or application account already allowed to run database queries could make affected MongoDB versions crash, disrupting database availability. The sources do not show data theft, data modification, or public active exploitation.
Executive priority
Handle through normal vulnerability management, but prioritize critical databases because exploitation can cause outages. The issue is not described as unauthenticated or actively exploited in the provided sources.
Technical view
The issue affects MongoDB Server 3.6 before 3.6.15, 4.0 before 4.0.13, and 4.2 before 4.2.1. It involves queries using $lookup and collations and is scored CVSS 3.1 6.5 with high availability impact and low privileges required.
Likely exposure
Exposure is most likely where legacy MongoDB Server 3.6, 4.0, or 4.2 deployments remain below the fixed versions and allow application or user accounts to run database queries.
Exploitation context
The CVE requires authenticated query privileges. KEV is false in the provided bundle, and no cited source states active exploitation. Treat this as an availability risk, especially for business-critical MongoDB-backed services.
Researcher notes
The weakness is listed as CWE-416. CVSS indicates network reachability, low attack complexity, low privileges, no user interaction, and availability-only impact. Evidence is limited to the CVE description and MongoDB issue reference.
Mitigation direction
- Upgrade MongoDB Server to 3.6.15, 4.0.13, 4.2.1, or later applicable versions.
- Check MongoDB vendor guidance for any deployment-specific remediation details.
- Review database accounts and remove unnecessary query privileges.
- Prioritize systems supporting critical applications or exposed to many internal users.
Validation and detection
- Inventory MongoDB Server versions across production and non-production environments.
- Confirm no affected deployment is below 3.6.15, 4.0.13, or 4.2.1.
- Review which users and applications can run database queries.
- Check operational logs for unexplained MongoDB crashes or availability interruptions.
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-416: 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-2019-2393 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-43350CVE 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.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.