Qsync Central 5.0.0.3 OOB Read Remote Exploit
CVE-2025-54170 Published on February 11, 2026
Qsync Central
An out-of-bounds read vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to obtain secret data.
We have already fixed the vulnerability in the following version:
Qsync Central 5.0.0.4 ( 2026/01/20 ) and later
Weakness Type
Out-of-bounds Read
The software reads data past the end, or before the beginning, of the intended buffer. Typically, this can allow attackers to read sensitive information from other memory locations or cause a crash. A crash can occur when the code reads a variable amount of data and assumes that a sentinel exists to stop the read operation, such as a NUL in a string. The expected sentinel might not be located in the out-of-bounds memory, causing excessive data to be read, leading to a segmentation fault or a buffer overflow. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent read operation then produces undefined or unexpected results.
Products Associated with CVE-2025-54170
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Affected Versions
QNAP Systems Inc. Qsync Central:- Version 5.0.x.x and below 5.0.0.4 ( 2026/01/20 ) is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.