Vulnerability Database

328,409

Total vulnerabilities in the database

CVE-2025-62848

A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to launch a denial-of-service (DoS) attack.

We have already fixed the vulnerability in the following versions: QTS 5.2.7.3297 build 20251024 and later QuTS hero h5.2.7.3297 build 20251024 and later QuTS hero h5.3.1.3292 build 20251024 and later

  • Published: Dec 16, 2025
  • Updated: Dec 18, 2025
  • CVE: CVE-2025-62848
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWEs:

Software From Fixed in
qnap / qts 5.2.0.2737-build_20240417 5.2.0.2737-build_20240417.x
qnap / qts 5.2.0.2744-build_20240424 5.2.0.2744-build_20240424.x
qnap / qts 5.2.0.2782-build_20240601 5.2.0.2782-build_20240601.x
qnap / qts 5.2.0.2802-build_20240620 5.2.0.2802-build_20240620.x
qnap / qts 5.2.0.2823-build_20240711 5.2.0.2823-build_20240711.x
qnap / qts 5.2.0.2851-build_20240808 5.2.0.2851-build_20240808.x
qnap / qts 5.2.0.2860-build_20240817 5.2.0.2860-build_20240817.x
qnap / qts 5.2.1.2930-build_20241025 5.2.1.2930-build_20241025.x
qnap / qts 5.2.2.2950-build_20241114 5.2.2.2950-build_20241114.x
qnap / qts 5.2.3.3006-build_20250108 5.2.3.3006-build_20250108.x
qnap / qts 5.2.4.3070-build_20250312 5.2.4.3070-build_20250312.x
qnap / qts 5.2.4.3079-build_20250321 5.2.4.3079-build_20250321.x
qnap / qts 5.2.4.3092-build_20250403 5.2.4.3092-build_20250403.x
qnap / qts 5.2.5.3145-build_20250526 5.2.5.3145-build_20250526.x
qnap / qts 5.2.6.3195-build_20250715 5.2.6.3195-build_20250715.x
qnap / qts 5.2.6.3229-build_20250818 5.2.6.3229-build_20250818.x
qnap / qts 5.2.7.3256-build_20250913 5.2.7.3256-build_20250913.x
qnap / quts_hero h5.2.0.2737-build_20240417 h5.2.0.2737-build_20240417.x
qnap / quts_hero h5.2.0.2782-build_20240601 h5.2.0.2782-build_20240601.x
qnap / quts_hero h5.2.0.2789-build_20240607 h5.2.0.2789-build_20240607.x
qnap / quts_hero h5.2.0.2802-build_20240620 h5.2.0.2802-build_20240620.x
qnap / quts_hero h5.2.0.2823-build_20240711 h5.2.0.2823-build_20240711.x
qnap / quts_hero h5.2.0.2851-build_20240808 h5.2.0.2851-build_20240808.x
qnap / quts_hero h5.2.0.2860-build_20240817 h5.2.0.2860-build_20240817.x
qnap / quts_hero h5.2.1.2929-build_20241025 h5.2.1.2929-build_20241025.x
qnap / quts_hero h5.2.1.2940-build_20241105 h5.2.1.2940-build_20241105.x
qnap / quts_hero h5.2.2.2952-build_20241116 h5.2.2.2952-build_20241116.x
qnap / quts_hero h5.2.3.3006-build_20250108 h5.2.3.3006-build_20250108.x
qnap / quts_hero h5.2.4.3070-build_20250312 h5.2.4.3070-build_20250312.x
qnap / quts_hero h5.2.4.3079-build_20250321 h5.2.4.3079-build_20250321.x
qnap / quts_hero h5.2.5.3138-build_20250519 h5.2.5.3138-build_20250519.x
qnap / quts_hero h5.2.6.3195-build_20250715 h5.2.6.3195-build_20250715.x
qnap / quts_hero h5.2.7.3256-build_20250913 h5.2.7.3256-build_20250913.x
qnap / quts_hero h5.3.0.3115-build_20250430 h5.3.0.3115-build_20250430.x
qnap / quts_hero h5.3.0.3145-build_20250530 h5.3.0.3145-build_20250530.x
qnap / quts_hero h5.3.0.3192-build_20250716 h5.3.0.3192-build_20250716.x
qnap / quts_hero h5.3.1.3250-build_20250912 h5.3.1.3250-build_20250912.x

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.