CVE-2026-34124 | TP-Link Tapo C520WS 2.6 HTTP buffer overflow

VDB-354960 · CVE-2026-34124 · GCVE-0-2026-34124 TP-LINK TAPO C520WS 2.6 HTTP BUFFER OVERFLOW HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 8.8 $0-$5k 0.68+ Summaryinfo A vulnerability was found in TP-Link Tapo C520WS 2.6 and classified as critical. Affected by this issue is some unknown functionality of the component HTTP Handler. The manipulation results in buffer overflow. This vulnerability is known as CVE-2026-34124. Access to the local network is required for this attack. No exploit is available. Detailsinfo A vulnerability classified as critical has been found in TP-Link Tapo C520WS 2.6. Affected is an unknown code of the component HTTP Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes: A denial-of-service vulnerability was identified in TP-Link Tapo C520WS v2.6 within the HTTP request path parsing logic. The implementation enforces length restrictions on the raw request path but does not account for path expansion performed during normalization. An attacker on the adjacent network may send a crafted HTTP request to cause buffer overflow and memory corruption, leading to system interruption or device reboot. The advisory is shared for download at tp-link.com. This vulnerability is traded as CVE-2026-34124 since 03/25/2026. The exploitability is told to be easy. The attack needs to be initiated within the local network. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/02/2026). There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Vendor TP-Link Name Tapo C520WS Version 2.6 License commercial Website Vendor: https://www.tp-link.com/ CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 8.8 VulDB Meta Temp Score: 8.8 VulDB Base Score: 8.8 VulDB Temp Score: 8.8 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Buffer overflow CWE: CWE-120 / CWE-119 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Partially Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 03/25/2026 CVE reserved 04/02/2026 +7 days Advisory disclosed 04/02/2026 +0 days VulDB entry created 04/02/2026 +0 days VulDB entry last update Sourcesinfo Vendor: tp-link.com Advisory: tp-link.com Status: Not defined CVE: CVE-2026-34124 (🔒) GCVE (CVE): GCVE-0-2026-34124 GCVE (VulDB): GCVE-100-354960 Entryinfo Created: 04/02/2026 19:36 Changes: 04/02/2026 19:36 (65) Complete: 🔍 Cache ID: 99:AB3:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸