www.qnap.com QNAP NAS Local Privilege Escalation Vulnerability Exploited in the Wild
Article Content
- •CVE-2026-31431 is actively exploited, allowing privilege escalation on QNAP NAS devices.
- •QNAP is working on security updates, but no fixes are currently available.
- •Users should implement recommended security measures to mitigate potential risks.
A local privilege escalation vulnerability, identified as CVE-2026-31431, has been reported to affect QNAP NAS devices. This vulnerability, also referred to as 'Copy Fail', allows authenticated non-administrator users with code execution capabilities to gain elevated system privileges. The vulnerability is currently being exploited in the wild, raising significant security concerns. QNAP is actively investigating the issue and is developing security updates, but no official mitigation is available at this time. Users are advised to monitor for updates and apply patches as soon as they are released. The vulnerability affects specific versions of the Linux kernel used in QNAP systems. Security measures are recommended to reduce exposure on potentially affected devices. The first public proof of concept (PoC) for this vulnerability was released on May 1, 2026.
Ask AI about this cluster
Answers cite the sources they use
Timeline
More articles in this cluster (6)
Following this threat?
Track CVE-2026-31431 in your own feed — you're alerted when they show up in new reporting, leak sites or exploitation.
Free account · no card needed
Continue Reading
China-Linked QTFY Group Targets Critical Infrastructure with Advanced Exploits The Joint Cybersecurity Advisory JCSA-20260826-01, released on August 26, 2026, details ongoing activities by the China-linked hacking group QTFY, attributed to Nanjing Xinjiuwei Network Technology Co. Active since 2018, QTFY employs platforms like QScan and QTRouter to exploit vulnerabilities in critical… 
Multiple Critical CVEs Exploited in Cybersecurity Attacks A series of vulnerabilities, including CVE-2025-49144, CVE-2025-31702, and CVE-2026-46333, have been identified, affecting systems like Notepad++ and FortiWeb devices. These vulnerabilities allow for local privilege escalation, SQL injection, and remote code execution. Attackers exploit these flaws through various…