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CVE-2025-52861

VioStor

HIGH
7
CVSS Score
Published: August 29, 2025 at 05:17 PM UTC
Updated: October 18, 2026 at 09:10 PM UTC
1 product affected across 1 vendorViostor Network Video Recorder

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Severity
HIGH7
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

Description

A path traversal vulnerability has been reported to affect VioStor. If a remote attacker gains an administrator account, they can then exploit the vulnerability to read the contents of unexpected files or system data. We have already fixed the vulnerability in the following version: VioStor 5.1.6 build 20250621 and later

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Viostor Network Video Recorder· Qnap
90%
5.1.0 ≤ v < 5.1.6 build 202506215.1.0
Affected range stops below 5.1.6 build 20250621, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: [email protected]
https://www.qnap.com/en/security-advisory/qsa-25-28

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7HIGHqnap
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-22

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