CVE intelligence and bounded remediation

CVE-2025-14299 — The HTTPS server on Tapo C200 V3 does not properly validate the Content-Length header, which can lead to an integer overflow

High CVSS 7.1

The HTTPS server on Tapo C200 V3 does not properly validate the Content-Length header, which can lead to an integer overflow. An unauthenticated attacker on the same local network segment can send crafted HTTPS requests to trigger excessive memory allocation, causing the device to crash and resulting in denial-of-service (DoS).

Severity
High
CVSS
7.1 (4.0)
Published
2025-12-20
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-770, CWE-190

Affected products

  • tp-link / tapo_c200_firmware / 1.3.3
  • tp-link / tapo_c200_firmware / 1.3.4
  • tp-link / tapo_c200_firmware / 1.3.5
  • tp-link / tapo_c200_firmware / 1.3.7
  • tp-link / tapo_c200_firmware / 1.3.9
  • tp-link / tapo_c200_firmware / 1.3.11

Showing 6 representative product identities from 12 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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