CVE-2021-26566

CriticalCVSS 9.0/10Last modified Jun 17, 2026

Description

Insertion of sensitive information into sent data vulnerability in synorelayd in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows man-in-the-middle attackers to execute arbitrary commands via inbound QuickConnect traffic.

Metrics

CVSS 3.1 9.0/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-201 CWE-200

Affected software

No affected versions have been published.

Timeline

Published: Feb 26, 2021
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2021

CVE-2021-265677.8Stack-based buffer overflow vulnerability in frontend/main.c in faad2 before 2.2.7.1 allow local attackers to execute arbitrary code via fil CVE-2021-265698.1Race Condition within a Thread vulnerability in iscsi_snapshot_comm_core in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows r CVE-2021-265707.8The Baseboard Management Controller (BMC) firmware in HPE Apollo 70 System prior to version 3.0.14.0 has a local buffer overflow in libifc.s CVE-2021-265717.8The Baseboard Management Controller (BMC) firmware in HPE Apollo 70 System prior to version 3.0.14.0 has a local buffer overflow in libifc.s CVE-2021-265727.8The Baseboard Management Controller (BMC) firmware in HPE Apollo 70 System prior to version 3.0.14.0 has a local buffer overflow in libifc.s CVE-2021-265737.8The Baseboard Management Controller (BMC) firmware in HPE Apollo 70 System prior to version 3.0.14.0 has a local buffer overflow in libifc.s CVE-2021-265747.8The Baseboard Management Controller (BMC) firmware in HPE Apollo 70 System prior to version 3.0.14.0 has a path traversal vulnerability in l CVE-2021-265757.8The Baseboard Management Controller (BMC) firmware in HPE Apollo 70 System prior to version 3.0.14.0 has a path traversal vulnerability in l CVE-2021-265767.8The Baseboard Management Controller (BMC) firmware in HPE Apollo 70 System prior to version 3.0.14.0 has a command injection vulnerability i CVE-2021-265777.8The Baseboard Management Controller (BMC) firmware in HPE Apollo 70 System prior to version 3.0.14.0 has a local buffer overflow in libifc.s CVE-2021-265787.5A potential security vulnerability has been identified in HPE Network Orchestrator (NetO) version(s): Prior to 2.5. The vulnerability could CVE-2021-265795.5A security vulnerability in HPE Unified Data Management (UDM) could allow the local disclosure of privileged information (CWE-321: Use of Ha