CVE-2025-22482Network attack vector

Authenticated secret disclosure via externally controlled format string

Published Jun 6, 2025 · Updated Jun 6, 2025

Externally controlled format string use in QNAP Qsync Central 4.5.x allows remote authenticated users to disclose secret data or modify memory. QNAP has not disclosed the affected function or input path; its record states only that externally controlled data is used as a format string. User access and network reachability are required, and the published impact is limited to secret-data disclosure or memory modification.

CVSS severity2.3
Low
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Externally controlled format string use in QNAP Qsync Central 4.5.x allows remote authenticated users to disclose secret data or modify memory. QNAP has not disclosed the affected function or input path; its record states only that externally controlled data is used as a format string. User access and network reachability are required, and the published impact is limited to secret-data disclosure or memory modification.

The record

CVE
CVE-2025-22482
Published
Jun 6, 2025
Updated
Jun 6, 2025
Vendor
Linn Products Limited
Product
Qsync Central
Classifications
CWE-134, CAPEC-67, CAPEC-135, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 6, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 6, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.5.x.x <4.5.0.6 ( 2025/03/20 )

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Linn Products Limited · Qsync Centralversion=4.5.x.x <4.5.0.6 ( 2025/03/20 )

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
2.3QNAP Systems, Inc.CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-134Use of Externally-Controlled Format String
CAPEC-67String Format Overflow in syslog()
CAPEC-135Format String Injection
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo