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CVE-2025-29897

Stack-based Buffer Overflow in qsyncsrv.cgi

LOW
0.6
CVSS Score
Published: October 15, 2026 at 06:57 AM UTC
Updated: October 19, 2026 at 10:10 PM UTC
1 product affected across 1 vendorQsync Central

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Severity
LOW0.6
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

A buffer copy without checking size of input 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 and later

Affected

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

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)

Release Notes
Source: cverecord
https://www.qnap.com/en/app-release-notes?keyword=Qsync%20&app=QsyncServer&product-line=nas

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

2.3LOWqnap
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-120CWE-121

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