Advisory Details

March 30th, 2026

(Pwn2Own) QNAP QHora-322 qvpn_db_mgr role_type Improper Neutralization of Escape Sequences Authentication Bypass Vulnerability

ZDI-26-240
ZDI-CAN-28423

CVE ID CVE-2025-62845
CVSS SCORE 6.3, AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
AFFECTED VENDORS QNAP
AFFECTED PRODUCTS QHora-322
VULNERABILITY DETAILS

This vulnerability allows remote attackers to bypass authentication on affected QNAP QHora-322 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.

The specific flaw exists within the handling of the role_type parameter provided to the qvpn_db_mgr endpoint. The issue results from insufficient neutralization of special characters. An attacker can leverage this vulnerability to bypass QBelt VPN authentication.
ADDITIONAL DETAILS QNAP has issued an update to correct this vulnerability. More details can be found at:
https://www.qnap.com/en/security-advisory/qsa-26-12
DISCLOSURE TIMELINE
  • 2025-11-18 - Vulnerability reported to vendor
  • 2026-03-30 - Coordinated public release of advisory
  • 2026-03-30 - Advisory Updated
CREDIT Bongeun Koo (@kiddo_pwn) and Evangelos Daravigkas (@freddo_1337) of Team DDOS
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