CVE intelligence and bounded remediation

CVE-2024-39815 — Vonets Var1200-H Firmware security vulnerability

Critical CVSS 9.4

Improper check or handling of exceptional conditions vulnerability affecting Vonets industrial wifi bridge relays and wifi bridge repeaters, software versions 3.3.23.6.9 and prior, enable an unauthenticated remote attacker to cause a denial of service. A specially-crafted HTTP request to pre-authentication resources can crash the service.

Severity
Critical
CVSS
9.4 (4.0)
Published
2024-08-12
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-703

Affected products

  • vonets / var1200-h_firmware
  • vonets / var1200-l_firmware
  • vonets / var600-h_firmware
  • vonets / vap11ac_firmware
  • vonets / vap11g-500s_firmware
  • vonets / vbg1200_firmware

Showing 6 representative product identities from 14 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

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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