CVE-2025-62858 PUBLISHED

QTS, QuTS hero

Assigner: qnap
Reserved: 24.10.2025 Published: 09.06.2026 Updated: 09.06.2026

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 versions: QTS 5.2.9.3410 build 20260214 and later QuTS hero h5.2.9.3410 build 20260214 and later QuTS hero h5.3.4.3500 build 20260520 and later QuTS hero h6.0.0.3397 build 20260206 and later

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
CVSS Score: 5.1

Product Status

Vendor QNAP Systems Inc.
Product QTS
Versions Default: unaffected
  • affected from 5.2.0 to 5.2.9.3410 build 20260214 (excl.)
Vendor QNAP Systems Inc.
Product QuTS hero
Versions Default: unaffected
  • affected from h5.2.0 to h5.2.9.3410 build 20260214 (excl.)
  • affected from h5.3.0 to h5.3.4.3500 build 20260520 (excl.)
  • affected from ? to h6.0.0.3397 build 20260206 (excl.)

Solutions

We have already fixed the vulnerability in the following versions: QTS 5.2.9.3410 build 20260214 and later QuTS hero h5.2.9.3410 build 20260214 and later QuTS hero h5.3.4.3500 build 20260520 and later QuTS hero h6.0.0.3397 build 20260206 and later

Credits

  • coral finder

References

Problem Types

  • CWE-121 CWE

Impacts

  • CAPEC-100