Security readout for executives and security teams
Plain-English summary
This CVE describes a memory corruption flaw in MikroTik RouterOS stable releases before 6.46.5. An authenticated remote user could crash the traceroute process and cause denial of service. The sources do not provide CVSS, affected CPEs, or confirmed exploitation.
Executive priority
Treat this as a practical availability risk for exposed or shared-administration MikroTik environments. Prioritize internet-facing or remotely administered routers, but do not treat it as confirmed actively exploited based on the provided evidence.
Technical view
The issue is in /nova/bin/traceroute, where a loop counter variable can trigger memory corruption leading to DoS. Authentication is required. The public record names RouterOS before 6.46.5 in the stable tree, but provides limited product metadata.
Likely exposure
Exposure is most likely on MikroTik RouterOS devices running stable versions older than 6.46.5, especially where untrusted or weakly controlled users can authenticate remotely. The bundle lacks CPEs and asset discovery details.
Exploitation context
The provided sources describe authenticated remote denial of service. CISA KEV status is false in the bundle, and no cited source confirms active exploitation. Public detail is limited to the disclosure and CVE records.
Researcher notes
The record is sparse: no CVSS, CWE, CPEs, exploit status, or detailed patch advisory is included. Analysis should stay anchored to authenticated remote DoS in /nova/bin/traceroute on RouterOS before 6.46.5 stable.
Mitigation direction
- Check MikroTik guidance for the affected stable-tree release range.
- Upgrade RouterOS stable installations to a non-affected release where vendor guidance supports it.
- Restrict administrative access to trusted networks and users.
- Remove unnecessary accounts and enforce strong authentication.
- Monitor affected devices for unexpected traceroute-related crashes or reboots.
Validation and detection
- Inventory MikroTik RouterOS devices and record exact stable-tree versions.
- Flag devices running RouterOS before 6.46.5 stable.
- Review who can authenticate remotely to management interfaces.
- Check logs for unexplained denial-of-service symptoms or process crashes.
- Confirm remediation against vendor release notes or official guidance.
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.
CVE-2020-20247 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://seclists.org/fulldisclosure/2020/May/30CVE 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.