Security officials have identified a privilege‑elevation flaw in QNAP’s QTS operating system that could allow attackers to gain elevated access on affected devices. The vulnerability, catalogued as CVE‑2026‑31431, targets QTS installations running kernel version 5.10 on ARM64 hardware. It was reported in QNAP’s security bulletin QSA‑26‑16, released on 2 May 2026. Users running the specified firmware should consult the vendor’s advisory for patch information and update instructions. The advisory recommends applying the latest security fixes as soon as they become available. QNAP’s bulletin can be accessed through the QNAP website, and the CVE record is available on the CVE database. No widespread exploitation has been reported to date. The vulnerability is specific to the ARM64 architecture.
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