Advisory Details

July 31st, 2025

(Pwn2Own) QNAP QHora-322 access_setting HTTP Request Smuggling Vulnerability

ZDI-25-736
ZDI-CAN-25632

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

This vulnerability allows network-adjacent attackers to smuggle arbitrary HTTP requests on affected installations of 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 access_setting endpoint. The issue results from the inconsistent parsing of terminators of HTTP headers. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the device.

ADDITIONAL DETAILS QNAP has issued an update to correct this vulnerability. More details can be found at:
https://www.qnap.com/en-us/security-advisories
DISCLOSURE TIMELINE
  • 2024-12-02 - Vulnerability reported to vendor
  • 2025-07-31 - Coordinated public release of advisory
  • 2025-07-31 - Advisory Updated
CREDIT Sina Kheirkhah (@SinSinology) of Summoning Team (@SummoningTeam)
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