CVE-2025-48721CWE-120CWE-121

CVE-2025-48721

Medium · published January 2, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
36.0
In the wild
Unconfirmed
What it is

A buffer overflow vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to modify memory or crash processes.

We have already fixed the vulnerability in the following version:

QTS 5.2.8.3332 build 20251128 and later

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00428 · 36.0th percentile
Weaknesses
CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'); CWE-121 · Stack-based Buffer Overflow
Published
2026-01-02T21:16Z
Affected products (38)
ProductVersionsFixed in
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References (1)
https://www.qnap.com/en/security-advisory/qsa-25-51 · [email protected]
EPSS history
Timeline
  • 02 JAN 15:17Z
    QTS, QuTS hero
    cvelistv5