GarrettCom Magnum 6K and 10K Authentication Bypass via Hardcoded String
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-798.
Summary
GarrettCom Magnum 6K and 10K managed switches contain an authentication bypass vulnerability that allows unauthenticated attackers to gain unauthorized access by exploiting a hardcoded string in the authentication mechanism. Attackers can bypass login controls to access administrative functions and sensitive switch configuration without valid credentials.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA GarrettCom Magnum 6K and 10K Managed Switches (Belden) Fixed in 4.7.7
Timeline
- 2026-10-02 Threatist record created from CVE-2017-20234
- 2026-10-03 Alias added: GHSA-vrjf-6q9f-r3qr
References
More Belden vulnerabilities
- TI-2019-09143 Wind River VxWorks has a Buffer Overflow in the TCP component (issue 1 of 4). CVSS 3.1CRITICAL 9.8
- TI-2019-09145 Wind River VxWorks 6.6 through 6.9 has a Buffer Overflow in the DHCP client component. CVSS 3.1HIGH 8.8
- TI-2022-19123 The web server of Hirschmann BAT-C2 before 09.13.01.00R04 allows authenticated command… CVSS 3.1HIGH 8.8
- TI-2019-09144 Wind River VxWorks 6.9 and vx7 has a Buffer Overflow in the IPv4 component. CVSS 3.1CRITICAL 9.8
- TI-2019-09148 Wind River VxWorks 6.9 and vx7 has a Buffer Overflow in the TCP component (issue 2 of 4). CVSS 3.1CRITICAL 9.8
- TI-2025-43113 A stored cross-site scripting (XSS) vulnerability exists in the web management interface… CVSS 3.1MEDIUM 6.1
Sources
- CVE-2017-20234 · CVE Program
- CVE-2017-20234 · NVD
- FIRST EPSS
- GHSA-vrjf-6q9f-r3qr · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences