Critical · CVSS 9.3CVE-2017-20234

GarrettCom Magnum 6K and 10K Authentication Bypass via Hardcoded String

Answer in brief

CVE-2017-20234 records a Critical severity (CVSS 9.3) vulnerability in GarrettCom Magnum 6K and 10K Authentication Bypass via Hardcoded String. The current sources do not mark it as known exploited. The current feed maps Belden/GarrettCom Magnum 6K and 10K Managed Switches (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Apr 3, 2026Updated Oct 1, 2026Source checked Oct 1, 2026First seen by HOL Oct 1, 2026Material review Oct 1, 2026

Upstream Advisory

Key facts

Risk: Critical · CVSS 9.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 9.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Belden/GarrettCom Magnum 6K and 10K Managed Switches (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Belden/GarrettCom Magnum 6K and 10K Managed Switchesgeneric	>=0 <=4.6.0 \|\| >=0 <=4.7.6	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Belden/GarrettCom Magnum 6K and 10K Managed Switches.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Apr 3, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 1, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 1, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.