CVE-2025-53591
A use of externally-controlled format string vulnerability has been reported to affect several QNAP operating system versions.
Published Jan 2, 2026 · updated Oct 14, 2026 · qnap quts hero
A use of externally-controlled format string 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 obtain secret data or modify memory. 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
Timeline
Detection, updates, and resolution for this record.
Jan 2, 2026 · NIST NVD
Detected
A use of externally-controlled format string 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 obtain secret data or modify memory. 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 20250
Oct 14, 2026 · NIST NVD
Updated
A use of externally-controlled format string 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 obtain secret data or modify memory. 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 20250
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.orgCVE-2025-53591
Official CVE identifier
cve.org - FIRST EPSSCVE-2025-53591
30-day exploitation probability 0.3%
first.org - NIST NVDCVE-2025-53591
A use of externally-controlled format string 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 obtain secret data or modify memory. We have already fix
nvd.nist.gov