CVE-2025-62843 | QNAP QuRouter up to 2.5.1.060 Endpoint communication channel to intended endpoints (qsa-26-12 / EUVD-2025-208895)

VDB-352101 · CVE-2025-62843 · QSA-26-12 QNAP QUROUTER UP TO 2.5.1.060 ENDPOINT COMMUNICATION CHANNEL TO INTENDED ENDPOINTS HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.1 $0-$5k 2.31+ Summaryinfo A vulnerability, which was classified as critical, has been found in QNAP QuRouter. This affects an unknown part of the component Endpoint. Performing a manipulation results in communication channel to intended endpoints. This vulnerability is identified as CVE-2025-62843. The attack may be carried out on the physical device. There is not any exploit available. It is advisable to upgrade the affected component. Detailsinfo A vulnerability, which was classified as critical, was found in QNAP QuRouter. This affects an unknown functionality of the component Endpoint. The manipulation with an unknown input leads to a communication channel to intended endpoints vulnerability. CWE is classifying the issue as CWE-923. The product establishes a communication channel to (or from) an endpoint for privileged or protected operations, but it does not properly ensure that it is communicating with the correct endpoint. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is: An improper restriction of communication channel to intended endpoints vulnerability has been reported to affect QHora. If an attacker gains physical access, they can then exploit the vulnerability to gain the privileges that were intended for the original endpoint. We have already fixed the vulnerability in the following version: QuRouter 2.6.3.009 and later The weakness was released with Pwn2Own 2025 as qsa-26-12. The advisory is shared at qnap.com. This vulnerability is uniquely identified as CVE-2025-62843 since 10/24/2025. The exploitability is told to be easy. An attack has to be approached locally. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. Upgrading to version 2.6.3.009 eliminates this vulnerability. The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-208895). Productinfo Type Router Operating System Vendor QNAP Name QuRouter Version 2.4.3.103 2.4.4.106 2.4.5.032 2.4.6.028 2.5.0.140 2.5.1 2.5.1.060 License commercial Website Vendor: https://www.qnap.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: 4.3 VulDB Meta Temp Score: 4.1 VulDB Base Score: 4.3 VulDB Temp Score: 4.1 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: Communication channel to intended endpoints CWE: CWE-923 CAPEC: 🔒 ATT&CK: 🔒 Physical: Yes Local: Yes Remote: No 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: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: QuRouter 2.6.3.009 Timelineinfo 10/24/2025 CVE reserved 03/20/2026 +147 days Advisory disclosed 03/20/2026 +0 days VulDB entry created 03/20/2026 +0 days VulDB entry last update Sourcesinfo Vendor: qnap.com Advisory: qsa-26-12 Organization: Pwn2Own 2025 Status: Confirmed CVE: CVE-2025-62843 (🔒) GCVE (CVE): GCVE-0-2025-62843 GCVE (VulDB): GCVE-100-352101 EUVD: 🔒 Entryinfo Created: 03/20/2026 17:57 Updated: 03/20/2026 18:57 Changes: 03/20/2026 17:57 (71), 03/20/2026 18:57 (1) Complete: 🔍 Cache ID: 99:058:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸