CVE-2025-53593
A buffer overflow vulnerability has been reported to affect several QNAP operating system versions.
Published Jan 2, 2026 · updated Oct 14, 2026 · qnap quts hero
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 5.2.7.3256 build 20250913 and later QuTS hero h5.2.7.3256 build 20250913 and later QuTS hero h5.3.1.3250 build 20250912 and later
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Jan 2, 2026 · NIST NVD
Detected
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 5.2.7.3256 build 20250913 and later QuTS hero h5.2.7.3256 build 20250913 and later QuTS hero h5.3.1
Oct 14, 2026 · NIST NVD
Updated
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 5.2.7.3256 build 20250913 and later QuTS hero h5.2.7.3256 build 20250913 and later QuTS hero h5.3.1
Affected
- cpe qnap/qts5.2.0.2737
- cpe qnap/quts heroh5.2.0.2737
- cpe qnap/quts heroh5.2.0.2782
- cpe qnap/quts heroh5.2.0.2789
- cpe qnap/quts heroh5.2.0.2802
- cpe qnap/quts heroh5.2.0.2823
- cpe qnap/quts heroh5.2.0.2851
- cpe qnap/quts heroh5.2.0.2860
- cpe qnap/quts heroh5.2.1.2929
Sources
- CVE.orgVulnerability recordCVE-2025-53593
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2025-53593
30-day exploitation probability 0.4%
first.org - NIST NVDVulnerability recordCVE-2025-53593
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 fo
nvd.nist.gov