CVE-2025-52863HIGH 8.1EPSS p21.3%
CVE-2025-52863CVE-2025-52863
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 versions:
QTS 5.2.7.3256 build 20250913 and later
QuTS hero h5.2.7.3256 build 20250913 and later
QuTS hero h5.3.0.3192 build 20250716 and later
Scoring
| CVSS 3.1 | 8.1 (HIGH) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |
| EPSS | 0.30% probability of exploitation · percentile 21.3% · 2026-06-19T12:03:05Z |
| Published | 2026-01-02 |
| Last modified | 2026-01-05 |
Underlying weaknesses· 1
References
1
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')cwe-120 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.