Threat Intelligence / CVE / CVE-2026-26240

CVE-2026-26240

CVSS 9.1 (CRITICAL) · EPSS 0.3% · Priority 5.5/10 · Published 2026-06-10

As of 2026-06-17, CVE-2026-26240 is a CVSS 9.1 (CRITICAL-severity) vulnerability. EPSS exploitation probability 0.3%. Threadlinqs Intelligence tracks 1 threat exploiting it.

Last updated: 2026-06-17

A buffer overflow vulnerability has been reported to affect File Station 5. The remote attackers can then exploit the vulnerability to modify memory or crash processes. We have already fixed the vulnerability in the following version: File Station 5 5.5.6.5243 and later

CVSS v3 vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Weaknesses (CWE)

CWE-121

Threats tracking this CVE

QNAP QSA-26-10: Multiple Injection and Memory-Safety Vulnerabilities in QTS, QuTS hero, QuTS cloud, QVP, and File Station (CVE-2025-66273, CVE-2026-26240, and 12 others) — HIGH

References

https://www.qnap.com/en/security-advisory/qsa-26-10

Full detection coverage & IOCs for threats exploiting CVE-2026-26240 are available via the Threadlinqs MCP server (Purple tier). View plans →

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Enriched from CVE.org, NVD (this product uses the NVD API but is not endorsed or certified by the NVD), FIRST EPSS, CISA KEV, and GitHub Security Advisories.