Security readout for executives and security teams
Plain-English summary
A flaw in the MSI RadiX AXE6600 router’s URL-filtering function may let an unauthenticated remote attacker run system commands as root. Successful compromise could expose network traffic, alter router settings, disrupt connectivity, or provide a foothold into connected environments.
Executive priority
Treat as an immediate asset-identification and remediation priority because compromise could grant root control of a network-edge device without authentication. Prioritize externally reachable and business-critical routers. Escalate any unexplained configuration changes or instability to incident response.
Technical view
CVE-2026-71984 is a CWE-78 command injection vulnerability reported in the urlfilter function of MSI RadiX AXE6600 firmware v781521. Its CVSS 3.1 score is 9.8: network-accessible, low complexity, no privileges or user interaction required, with high confidentiality, integrity, and availability impact.
Likely exposure
Confirmed scope is limited to the MSI RadiX AXE6600 and the firmware identified as v781521. Exposure is greatest where the vulnerable function is reachable from untrusted networks. The supplied affected-version metadata also lists “0,” so administrators should verify exact scope with MSI rather than infer additional versions.
Exploitation context
The sources describe remote, unauthenticated command execution with root privileges. The CVE is not listed as CISA KEV in the supplied data, and no cited evidence confirms active exploitation. Public exploit availability is not established by this source bundle.
Researcher notes
The supplied record identifies v781521 in the description, while structured affected-version data contains “0,” creating scope uncertainty. The MSI support page is labeled as a fix download, but no exact fixed version is provided. Validate version applicability and remediation directly with MSI. Avoid interpreting absent KEV status as proof of no exploitation.
Mitigation direction
- Identify all MSI RadiX AXE6600 routers and record their installed firmware versions.
- Check MSI support guidance for the confirmed fixed firmware version before updating.
- Apply vendor-approved firmware promptly after appropriate configuration backup and change control.
- Until remediated, restrict router management and URL-filtering access to trusted networks.
- Isolate suspected devices and rotate router credentials after containment.
Validation and detection
- Confirm each device model and firmware version through trusted administrative records.
- Verify the installed firmware against MSI’s current support guidance.
- Review router logs for unexpected administrative activity, commands, reboots, or configuration changes.
- Confirm management services are not reachable from untrusted networks.
- After updating, verify firmware integrity, configuration, connectivity, and access restrictions.
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-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. 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-2026-71984 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
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/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.
SSVC decision data
CVSS vector scores
2 official scoresWe 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:N/UI:N/S:U/C:H/I:H/A:H3.95.9VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——VulnCheckVulnerability scoring details
Base CVSS 4.0 score
9.3CriticalVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- MSI Vendor SiteCVE reference, VulnCheck · product
- Fix Version DownloadCVE reference, VulnCheck · patch
- https://www.vulncheck.com/advisories/msi-radix-axe6600-v781521-command-injection-via-urlfilterCVE reference, VulnCheck · third-party-advisory
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.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.