Low

Authenticated buffer overflow in QNAP License Center 2.0.x

IdentifiersCVE-2025-53597CWE-120

CVE-2025-53597 is a buffer overflow vulnerability in QNAP License Center (2.0.x) on QNAP NAS devices. An attacker who has obtained an administrator account can trigger the overflow to corrupt process memory, which may result in process crashes (denial of service) and potential memory modification. QNAP fixed the issue in License Center 2.0.36 and later.

For your environment

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

A successful exploit can lead to License Center process instability and crashes (denial of service) and may allow modification/corruption of memory within the affected process. The issue is not described as enabling unauthenticated remote exploitation; exploitation is contingent on prior account compromise (administrator).

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not possible, reduce exposure by limiting access to the NAS management interfaces/License Center to trusted networks, hardening and monitoring administrator accounts (strong passwords, MFA where available), and minimizing the number of users with administrative privileges to reduce the likelihood of credential-based exploitation.

Remediation

Patch, then assume compromise.

Upgrade QNAP License Center to version 2.0.36 or later (via the QTS/QuTS hero management interface), which contains the vendor fix for CVE-2025-53597.

PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

QNAP SystemsLicense Centerapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

6 SOURCESView more in app

cyber security newsNews

Jan 5, 2026

Multiple Vulnerabilities in QNAP Tools Let Attackers Obtain Secret Data

A buffer overflow vulnerability in QNAP License Center 2.0.x that allows a remote attacker with an administrator account to modify memory or crash processes, potentially leading to denial-of-service.

the hacker newsNews

Jan 5, 2026

⚡ Weekly Recap: IoT Exploits, Wallet Breaches, Rogue Extensions, AI Abuse & More

Unknown

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity4