Security readout for executives and security teams
Plain-English summary
CVE-2020-27466 is a reported arbitrary file write flaw in rConfig 3.9.6. The CVE description says a crafted file can lead to arbitrary code execution. For executives, treat exposed rConfig systems as sensitive because rConfig manages network device configuration.
Executive priority
Prioritize this quickly for any exposed rConfig 3.9.6 instance. The business concern is potential server compromise through a network-configuration management tool, although active exploitation is not established in the supplied sources.
Technical view
The reported vulnerable path is lib/AjaxHandlers/ajaxEditTemplate.php in rConfig 3.9.6. The public description states attackers can write an arbitrary file and execute arbitrary code via a crafted file. The source bundle does not provide CVSS, CWE, or a complete affected-version matrix.
Likely exposure
Exposure is most likely where rConfig 3.9.6 is deployed, especially if its management interface is reachable from untrusted networks. The bundle lists affected vendor and product fields as incomplete, so do not assume other versions without vendor confirmation.
Exploitation context
The supplied data does not show CISA KEV listing or active exploitation evidence. A public SSD advisory exists and describes the issue as unauthenticated RCE, but the bundle does not include exploit prevalence or observed attacks.
Researcher notes
Evidence is sparse: the CVE record names the vulnerable file and outcome, and the SSD reference frames it as unauthenticated RCE. No CVSS, CWE, patch details, or complete affected-version range are provided in the bundle.
Mitigation direction
- Inventory rConfig deployments and confirm whether version 3.9.6 is present.
- Check rConfig and SSD advisory guidance for fixed releases or official workarounds.
- Restrict rConfig access to trusted administrative networks while assessing remediation.
- Review rConfig host integrity if it was exposed to untrusted users.
- Prioritize replacement or upgrade if no supported fixed version is available.
Validation and detection
- Confirm installed rConfig version from asset records or application metadata.
- Check whether the rConfig interface is internet-facing or broadly reachable internally.
- Review web logs around ajaxEditTemplate.php for unexpected write-related activity.
- Inspect rConfig file areas for unexpected templates or recently modified files.
- Verify remediation against vendor guidance before returning exposure to normal.
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.
Execution 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 lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2020-27466 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://ssd-disclosure.com/ssd-advisory-rconfig-unauthenticated-rce/CVE 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.