CVE-2025-52870HIGH 8.1EPSS p29.4%

CVE-2025-52870CVE-2025-52870

Description

A buffer overflow vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to modify memory or crash processes. We have already fixed the vulnerability in the following version: Qsync Central 5.0.0.4 ( 2026/01/20 ) and later

Scoring

CVSS 3.18.1 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
EPSS0.38% probability of exploitation · percentile 29.4% · 2026-06-19T12:03:05Z
Published2026-02-11
Last modified2026-02-12

Underlying weaknesses· 2

CWE-120CWE-122

References

  1. https://www.qnap.com/en/security-advisory/qsa-26-02

2

TypeTargetConfidenceTier
WeaknessBuffer Copy without Checking Size of Input ('Classic Buffer Overflow')cwe-1200%live
WeaknessHeap-based Buffer Overflowcwe-1220%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.