CVE-2026-34121
8.8 · HIGHOverview
CVE-2026-34121 is a high-severity vulnerability affecting tp-link tapo_c520ws_firmware. It was published on April 2, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical Description
An authentication bypass vulnerability within the HTTP handling of the DS configuration service in TP-Link Tapo C520WS v2.6 was identified, due to inconsistent parsing and authorization logic in JSON requests during authentication check. An unauthenticated attacker can append an authentication-exempt action to a request containing privileged DS do actions, bypassing authorization checks.
Successful exploitation allows unauthenticated execution of restricted configuration actions, which may result in unauthorized modification of device state.
Remediation
Check the references section for vendor advisories and patches from tp-link. Update tapo_c520ws_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| tp-link | tapo_c520ws_firmware | >= 0, < 1.2.4 | Affected |
Frequently Asked Questions
What is CVE-2026-34121?
CVE-2026-34121 is a high-severity vulnerability affecting tp-link tapo_c520ws_firmware. It was published on April 2, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).
How severe is CVE-2026-34121?
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-34121?
Check the references section for vendor advisories and patches from tp-link. Update tapo_c520ws_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-34121?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-34121 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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