MSI Radix AXE6600 781521 openvpn command injection

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.5$0-$5k0.56+

Summaryinfo

A vulnerability has been found in MSI Radix AXE6600 781521 and classified as very critical. The impacted element is the function openvpn. This manipulation causes command injection. The identification of this vulnerability is CVE-2026-71993. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability has been found in MSI Radix AXE6600 781521 and classified as very critical. Affected by this vulnerability is the function openvpn. The manipulation with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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

This vulnerability is known as CVE-2026-71993 since 08/09/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/09/2026). MITRE ATT&CK project uses the attack technique T1202 for this issue.

Applying the patch 781521 is able to eliminate this problem.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.5

VulDB Base Score: 9.9
VulDB Temp Score: 9.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: 781521

Timelineinfo

08/09/2026 Advisory disclosed
08/09/2026 +0 days CVE reserved
08/09/2026 +0 days VulDB entry created
08/09/2026 +0 days VulDB entry last update

Sourcesinfo

Status: Confirmed

CVE: CVE-2026-71993 (🔒)
GCVE (CVE): GCVE-0-2026-71993
GCVE (VulDB): GCVE-100-387229

Entryinfo

Created: 08/09/2026 02:19
Changes: 08/09/2026 02:19 (53)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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