Security readout for executives and security teams
Plain-English summary
CVE-2020-5419 affects RabbitMQ on Windows. A local attacker who already has write access to the RabbitMQ installation directory could plant a binary and cause arbitrary code to run. This is not a remote internet-facing bug, but it can turn weak local permissions into full compromise of the RabbitMQ host.
Executive priority
Treat this as a controlled remediation item, not an emergency remote-exploit event. Prioritize Windows RabbitMQ servers with broad local access, weak installation-directory permissions, or high business impact.
Technical view
The issue is a Windows-specific CWE-427 binary planting vulnerability in RabbitMQ 3.8.x before 3.8.7, with source data also listing 3.7 and 3.8 as affected. CVSS 6.7 reflects local access, low attack complexity, high privileges required, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely on Windows RabbitMQ deployments running affected 3.7 or 3.8 versions where non-administrative users, service accounts, or deployment tooling can write to the RabbitMQ installation directory.
Exploitation context
The source bundle does not indicate known active exploitation, and KEV is false. Exploitation requires local Windows access plus write privileges to the RabbitMQ installation directory, so risk depends heavily on endpoint access controls and filesystem permissions.
Researcher notes
Evidence supports local arbitrary code execution through binary planting. The main uncertainty is version scope because the description names 3.8.x before 3.8.7 while affected metadata lists 3.7 and 3.8. Validate against the vendor advisory before closing exposure.
Mitigation direction
- Follow the VMware Tanzu advisory for supported fixed versions.
- Upgrade RabbitMQ 3.8.x installations to 3.8.7 or later where applicable.
- Restrict write access to the RabbitMQ installation directory.
- Review service account privileges on Windows RabbitMQ hosts.
- Remove unnecessary local access to RabbitMQ servers.
Validation and detection
- Inventory Windows hosts running RabbitMQ 3.7 or 3.8.
- Confirm exact RabbitMQ version and compare against vendor guidance.
- Audit RabbitMQ installation directory ACLs for unexpected write access.
- Review local users and service accounts with server access.
- Check for unauthorized files in the installation directory.
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-427: 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2020-5419 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
- 6.7 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/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:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H0.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
6.7MediumVector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://tanzu.vmware.com/security/cve-2020-5419CVE 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.
Uncontrolled Search Path Element
Uncontrolled Search Path Element represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.