CVE intelligence and bounded remediation

CVE-2024-33700 — Level1 Wbr-6012 Firmware security vulnerability

High CVSS 7.5

The LevelOne WBR-6012 router firmware R0.40e6 suffers from an input validation vulnerability within its FTP functionality, enabling attackers to cause a denial of service through a series of malformed FTP commands. This can lead to device reboots and service disruption.

Severity
High
CVSS
7.5 (3.1)
Published
2024-10-30
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-20

Affected products

  • level1 / wbr-6012_firmware / r0.40e6

Matched remediation archetype

Resource exhaustion and denial of service

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Identify attacker-influenced work factors including input size, nesting, compression, fan-out, regex cost, allocation, recursion, retries, and connection lifetime.
  • Map per-request and shared CPU, memory, disk, descriptor, thread, queue, and downstream-service limits.
  • Determine whether authentication, tenancy, quotas, and rate controls apply before expensive processing begins.

Remediate safely

  • Bound input size, nesting, expansion, work, concurrency, queue depth, retries, and execution time before resource-intensive processing.
  • Release resources on every success, error, cancellation, and timeout path and use backpressure instead of unbounded buffering.
  • Update affected components and add small deterministic tests that assert resource ceilings rather than exhausting a host.

Authoritative sources

Complete CVE record and remediation plan

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