SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-44056

An improper authentication vulnerability has been reported to affect QNAP device running Video Station.

CRITICAL 9.8EPSS 0.93%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.93%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

An improper authentication vulnerability has been reported to affect QNAP device running Video Station. If exploited, this vulnerability allows attackers to compromise the security of the system. We have already fixed this vulnerability in the following versions of Video Station: Video Station 5.5.9 and later Video Station 5.3.13 and later Video Station 5.1.8 and later

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
0.93% probability · 60th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-287
Affected
qnap/video station
Source
security@qnapsecurity.com.tw
EPSS trend
0%3%5%26 October 2026: 0.93%26 October 202626 October 2026

EPSS 0.9% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.