Vulnerability · Published Feb 11, 2026 · Assigned by qnap
CVE-2025-48725QuTS hero
Low 0.6
In plain English
A low-severity buffer overflow in QuTS hero from QNAP Systems Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).
Severity (CVSS 4.0)0.6Low
Exploit odds (30 days)0.5%top 59.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A buffer overflow vulnerability has been reported to affect several QNAP operating system versions. 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: QuTS hero h5.3.2.3354 build 20251225 and later
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| QNAP Systems Inc. | QuTS hero | h5.3.x – before h5.3.2.3354 build 20251225 |
Weakness: CWE-120, CWE-121 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U