Security readout for executives and security teams
Plain-English summary
A low-privileged authenticated MongoDB user could repeatedly call the features command and put unusual pressure on server resources. At high volume, this can degrade availability and, rarely, affect data integrity through id field collisions. The issue is not described as remotely exploitable without authentication.
Executive priority
Treat this as a moderate operational risk, not an emergency based on available evidence. Prioritize remediation for internet-adjacent, shared, or untrusted-user MongoDB environments, and fold lower-risk internal systems into normal patch cycles.
Technical view
CVE-2021-32036 is a CWE-770 resource allocation issue in MongoDB Server. A network-accessible authenticated user with low privileges can repeatedly invoke the features command, causing resource depletion or high lock contention. Impact is limited to low availability and integrity effects under CVSS 3.1 score 5.4.
Likely exposure
Exposure is most relevant where affected MongoDB versions allow broad authenticated access, shared application credentials, or untrusted users. Affected branches are MongoDB Server 5.0 through 5.0.3, 4.4 through 4.4.9, 4.2 through 4.2.16, and 4.0 through 4.0.28.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. Abuse requires authentication, but no special authorization is described. Practical risk rises in multi-tenant, partner-accessible, or weakly governed database environments.
Researcher notes
The public description is narrow and does not provide deep implementation detail. Validation should focus on version exposure, authentication boundaries, and operational telemetry rather than exploit reproduction. Do not assume broader MongoDB products or versions are affected beyond the listed server branches.
Mitigation direction
- Upgrade MongoDB Server to a version outside the affected ranges per vendor guidance.
- Restrict MongoDB authentication to trusted users and applications only.
- Review whether shared or low-trust credentials can access affected MongoDB deployments.
- Monitor for abnormal features command volume, lock contention, or resource exhaustion.
- Check MongoDB Jira and release guidance before changing production clusters.
Validation and detection
- Inventory MongoDB Server versions across production, staging, and development environments.
- Confirm no deployed instance remains within the listed affected version ranges.
- Review database logs and metrics for unusual features command activity or lock contention.
- Validate user accounts follow least privilege and are not shared across tenants.
- After remediation, confirm version and operational metrics remain stable.
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-770: 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 lookupCVE-2021-32036 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
- 5.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
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:L/A:L2.82.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://jira.mongodb.org/browse/SERVER-59294CVE reference · x_refsource_MISC
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.
Allocation of Resources Without Limits or Throttling
Allocation of Resources Without Limits or Throttling represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.