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Notice Released By: EZVIZ Security Team
Initial Release Date: 2026/02/28
Vulnerability & Affected Versions:
Some EZVIZ NAS products contain security vulnerabilities.
Vulnerability Details:
(1) CVE-2026-22623
Due to insufficient input validation on certain interfaces, authenticated users could execute arbitrary commands on the device by crafting specific packets.
(2) CVE-2026-22624
Due to inadequate access control, authenticated users could unauthorizedly manipulate other users' file resources.
(3) CVE-2026-22625
Due to improper filename handling, sensitive system files could potentially be exposed.
(4) CVE-2026-22626
Due to insufficient input validation on certain interfaces, authenticated users could cause device malfunction by crafting specific packets.
Vulnerability IDs:
CVE-2026-22623
CVE-2026-22624
CVE-2026-22625
CVE-2026-22626
Scoring:
These vulnerabilities are rated using the CVSS v3.1 standard (http://www.first.org/cvss/specification-document).
CVE-2026-22623
Base Score: 7.2 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)
CVE-2026-22624
Base Score: 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)
CVE-2026-22625
Base Score: 4.6 (CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
CVE-2026-22626
Base Score: 4.9 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H)
Affected Versions and Fixed Versions:
Affected Models | Affected Versions | Fixed Versions |
CS-R5C-R100-8F | V5.7.0_Build_240807 and below | V5.7.4 build 260119 |
Fix Progress:
The reported vulnerability has been fully identified and patched into the latest EZVIZ firmware, which has been released to the affected users for firmware update via the EZVIZ App.
Completing Device Firmware Upgrade:
For users with an affected device, they can complete the firmware upgrade via their EZVIZ App on the specific device page to mitigate the vulnerability. Users should have received an upgrade notification and are able to follow the instruction on the update page to complete the upgrade properly.
Source of Vulnerability Information:
These vulnerabilities were discovered by Jincheng Wang (@winmt) from Nanjing University of Posts and Telecommunications, who reported them to the EZVIZ Security Team.
Contact Us:
If you believe you have discovered a security vulnerability, please report it to EZVIZ at security@ezviz.com, or join our bounty program on YesWeHack. Our security team will be in touch if we need more information.
EZVIZ would like to thank all security researchers and professionals who help test, identify and mitigate potential vulnerabilities in EZVIZ products, ensuring that we continue to respectfully protect people and homes, while securing devices and data.