A command injection vulnerability has been reported to affect several QNAP operating system versions. If an attacker gains local network access who have also gained a user account, they can then exploit the vulnerability to execute arbitrary commands.
We have already fixed the vulnerability in the following versions:
QTS 5.1.9.2954 build 20241120 and later
QTS 5.2.3.3006 build 20250108 and later
QuTS hero h5.1.9.2954 build 20241120 and later
QuTS hero h5.2.3.3006 build 20250108 and later
CVSS Score
7.8
EPSS Score
0.0
Published
2026-03-11
A link following vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to traverse the file system to unintended locations.
We have already fixed the vulnerability in the following versions:
QTS 5.2.8.3350 build 20251216 and later
QuTS hero h5.3.2.3354 build 20251225 and later
QuTS hero h5.2.8.3350 build 20251216 and later
CVSS Score
9.8
EPSS Score
0.001
Published
2026-02-11
A use of uninitialized variable 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 denial of service conditions, or modify control flow in unexpected ways.
We have already fixed the vulnerability in the following versions:
QTS 5.2.8.3332 build 20251128 and later
QuTS hero h5.2.8.3321 build 20251117 and later
CVSS Score
4.9
EPSS Score
0.001
Published
2026-02-11
A NULL pointer dereference 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 launch a denial-of-service (DoS) attack.
We have already fixed the vulnerability in the following versions:
QTS 5.2.8.3332 build 20251128 and later
QuTS hero h5.2.8.3321 build 20251117 and later
CVSS Score
4.9
EPSS Score
0.001
Published
2026-02-11
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 version:
QuTS hero h5.3.2.3354 build 20251225 and later
CVSS Score
8.1
EPSS Score
0.001
Published
2026-02-11
An exposure of sensitive system information to an unauthorized control sphere vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to read application data.
We have already fixed the vulnerability in the following versions:
QTS 5.2.8.3332 build 20251128 and later
QuTS hero h5.2.8.3321 build 20251117 and later
QuTS hero h5.3.1.3250 build 20250912 and later
CVSS Score
7.5
EPSS Score
0.0
Published
2026-01-02
A path traversal 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 read the contents of unexpected files or system data.
We have already fixed the vulnerability in the following versions:
QTS 5.2.8.3332 build 20251128 and later
QuTS hero h5.2.8.3321 build 20251117 and later
CVSS Score
4.9
EPSS Score
0.001
Published
2026-01-02
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
CVSS Score
6.5
EPSS Score
0.001
Published
2026-01-02
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
CVSS Score
6.5
EPSS Score
0.0
Published
2026-01-02
A path traversal 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 read the contents of unexpected files or system data.
We have already fixed the vulnerability in the following versions:
QTS 5.2.8.3332 build 20251128 and later
QuTS hero h5.2.8.3321 build 20251117 and later
CVSS Score
4.9
EPSS Score
0.0
Published
2026-01-02
Page 1