PT-2026-48376 · Synology · File Station

Published 2026-06-10 · Updated 2026-06-10 · CVE-2026-26240

Positive Technologies (AI Summary)

CVSS v4.0

5.3

Medium

Base vector

AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions Synology File Station 5 versions prior to 5.5.6.5243

Description A buffer overflow occurs, which allows remote attackers to modify memory or cause processes to crash. A buffer overflow is a condition where a program writes more data to a memory buffer than it can hold, potentially overwriting adjacent memory locations.

Recommendations Update to version 5.5.6.5243 or later.

Fix

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

CVE-2026-26240

Affected Products

File Station

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-26240 · Security Note
• https://qnap.com/en/security-advisory/qsa-26-32 · Note
• https://twitter.com/VulmonFeeds/status/2064587284918292556 · Twitter Post