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CVE Record

CVE-2026-71985: MSI Radix AXE6600 v781521 Command Injection via accesscontrol Function

MSI Radix AXE6600 router firmware version v781521 contains a command injection vulnerability in the accesscontrol function that allows remote attackers to execute arbitrary commands on the affected device. Attackers can exploit this vulnerability through the accesscontrol function to execute malicious commands and obtain root privileges on the underlying system.

CriticalCVSS 9.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

CVE-2026-71985 is a critical command-injection flaw reported in MSI RadiX AXE6600 firmware v781521. A remote, unauthenticated attacker could potentially take full control of an affected router, alter traffic handling, access data passing through it, or disrupt connectivity. The supplied sources do not establish active exploitation.

Executive priority

Treat as an urgent edge-device remediation. Prioritize internet-reachable or broadly accessible routers because successful exploitation could provide root control over a security-sensitive network gateway. Establish the vendor-confirmed fixed release before deployment; the supplied bundle links to MSI support but does not name a fixed version.

Technical view

The accesscontrol function reportedly passes attacker-controlled input into an operating-system command context, classified as CWE-78. The CVSS 3.1 score is 9.8: network-accessible, low complexity, no privileges or user interaction, with potential root-level compromise affecting confidentiality, integrity, and availability.

Likely exposure

Exposure is limited to MSI RadiX AXE6600 devices running the reported vulnerable firmware and reachable through the affected accesscontrol functionality. The bundle does not establish whether exploitation requires internet-facing management, LAN access, or another specific network path. Confirm firmware and interface reachability directly.

Exploitation context

The issue is described as remotely exploitable without authentication or user interaction. Successful exploitation reportedly permits arbitrary command execution with root privileges. The CVE is not marked as CISA KEV in the supplied bundle, and no cited evidence confirms exploitation in the wild or public exploit availability.

Researcher notes

The narrative identifies firmware v781521, while the structured affected entry lists version "0," creating a data-quality inconsistency. The bundle provides no vulnerable endpoint details, fixed-version number, exploitation telemetry, or proof of concept. Avoid assuming broader MSI product impact. Validate scope and remediation against MSI's current advisory and firmware metadata.

Mitigation direction

  • Inventory MSI RadiX AXE6600 routers and identify devices running firmware v781521.
  • Check MSI support guidance for the confirmed fixed firmware version and upgrade promptly.
  • Until updated, restrict management and accesscontrol functionality to trusted administrative networks.
  • Remove unnecessary internet exposure and apply network filtering around affected devices.
  • If compromise is suspected, isolate the router and follow incident-response procedures.

Validation and detection

  • Confirm the exact hardware model and installed firmware through trusted administration records.
  • Verify whether the affected interface is reachable from untrusted networks or wireless clients.
  • After upgrading, confirm the installed version matches MSI's documented fixed release.
  • Review router logs and configuration for unexplained administrative changes or command execution indicators.
  • Validate network rules prevent untrusted access to router management services.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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 · medium confidence lookup

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 lookup
description · low confidence lookup

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 lookup
cve · low confidence lookup

CVE-2026-71985 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
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

Official CVE source material

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.

2CVSS vectors
3Timeline events
1ADP providers
4Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: yesTechnical Impact: total

CVSS vector scores

2 official scores

We 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.

ScoreVersionSeverityVectorExploitImpactSource
9.8CVSS 3.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9VulnCheck
9.3CVSS 4.0CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——VulnCheck

Vulnerability scoring details

Base CVSS 4.0 score

9.3Critical
CVSS 4.0 vector shape for CVE-2026-71985Attack VectorAttack ComplexityAttack RequirementsPrivileges RequiredUser InteractionVS ConfidentialityVS IntegrityVS AvailabilitySS ConfidentialitySS IntegritySS Availability

Vector: 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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Attack Requirements
NonePresent
Privileges Required
NoneLowHigh
User Interaction
NonePassiveActive
VS Confidentiality
HighLowNone
VS Integrity
HighLowNone
VS Availability
HighLowNone
SS Confidentiality
HighLowNone
SS Integrity
HighLowNone
SS Availability
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
MSIRadix AXE66000affected
Weakness

CWE details

CWE-78

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.