CVE-2026-39997
A missing authentication for critical function vulnerability has been reported to affect HybridDesk Station.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.24%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A missing authentication for critical function vulnerability has been reported to affect HybridDesk Station. If exploited, the vulnerability could allow remote attackers to gain access to the system. We have already fixed the vulnerability in the following version: HybridDesk Station 4.2.22 and later
- CVSS 4.0
- 8.9 HIGHCVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.24% probability · 15th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-306
- Source
- security@qnapsecurity.com.tw
EPSS moved from 0.4% on 15 October 2026 to 0.2% on 27 October 2026.
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.