Hard-coded RSA Private Key Enables Impersonation Against TP-Link Tapo C500 Wi-Fi Camera

This vulnerability exists in Tapo C500 Wi-Fi camera due to hard-coded RSA private key embedded within the device firmware. An attacker with physical access could exploit this vulnerability to obtain cryptographic private keys which can then be used to perform impersonation, data decryption and man in the middle attacks on the targeted device.

The normalized record marks the default status of the listed products as unaffected while explicitly identifying these affected ranges:

• TP-Link Tapo C500 V1 Wi-Fi Camera: versions <=1.1.4 are affected. CERT-In specifically identifies firmware 1.1.4 Build 240506 Rel.39487n and earlier.
• TP-Link Tapo C500 V2 Wi-Fi Camera: versions <=1.0.2 are affected. CERT-In specifically identifies firmware 1.0.2 Build 240605 Rel.32561n and earlier.

The advisory identifies 1.3.2 as the V1 update target and 1.0.6 as the V2 update target. Those target versions do not, by themselves, establish the status of every later or parallel release branch without separate supporting evidence.

TP-Link Tapo C500 Wi-Fi Camera contains an RSA private key hard-coded into device firmware, matching CWE-321, Use of Hard-coded Cryptographic Key. The confirmed attack precondition is physical access to the camera; the record also states that no privileges and no user interaction are required. At a high level, an attacker may obtain cryptographic private keys from the firmware or device and use them for impersonation, data decryption, or man-in-the-middle attacks against the targeted device. The specific extraction method, key storage location, affected protocol, and whether the key is shared across devices are not disclosed.

• Reachability: physical access to the camera is required; remote exploitation is not established by the available evidence.
• Authentication and interaction: the record states that no privileges and no user interaction are required.
• Complexity: the normalized record describes the attack complexity as low.
• Exploitation status: the supplied record sets public_exploit to false, and the retrieved enrichment marks exploitation as none. This does not prove that undisclosed activity does not exist.

A hard-coded RSA private key may be recovered from the firmware or device when an attacker has physical access. The exposed key may enable impersonation of the device's cryptographic identity, decryption of protected data, and man-in-the-middle interference with communications. The record assesses potential impact as high across confidentiality, integrity, and availability. The documented scope is the targeted device; there is no evidence that the flaw automatically extends to other systems or that it has resulted in a confirmed compromise.

Exposure of the camera's private key can undermine the trust placed in its cryptographic identity. The documented consequences include impersonation, data decryption, and man-in-the-middle traffic manipulation, which may affect the confidentiality and integrity of camera data. The source assesses potential impact across confidentiality, integrity, and availability, but does not describe a concrete outage, destructive action, or confirmed breach. Impact on systems beyond the targeted device is not established and would depend on how the organization trusts the camera and what data flows it protects.

1. Upgrade TP-Link Tapo C500 V1 to version 1.3.2 and TP-Link Tapo C500 V2 to version 1.0.6, as directed by CERT-In.
2. Before installation, confirm the hardware branch and verify that the firmware package matches the device. The V2 download reference displayed in the advisory uses a V1-labelled filename, so the model and package should be checked carefully before deployment.
3. After the update, verify the installed firmware version and build on every camera and retain deployment records for the remediated devices.
4. The available source does not document a separate temporary mitigation. If updating is not yet possible, treat an affected device as still exposed and restrict physical access as a precaution, not as a fix for the underlying defect.

1. Inventory deployed TP-Link Tapo C500 cameras and distinguish the V1 and V2 hardware branches.
2. Collect the installed firmware version and build from the management interface or device-management process, then compare them with the affected ranges and update targets in affected_summary.
3. After updating, confirm that each device is running firmware intended for its hardware branch; do not treat a filename or package from another branch as evidence of safety.
4. If key exposure is suspected, review for unusual device identity behavior, certificate authentication anomalies, data decryption activity, or traffic interception. These are precautionary review points, not published IOCs.
5. The available advisory does not specify a log event, file path, or dedicated detection pattern. The absence of a monitoring alert should not be treated as proof that a device is safe.