PT-2025-40581 · Qnap · Qts+1

Coral · Published 2025-10-03 · Updated 2025-10-03 · CVE-2025-52859

Positive Technologies (AI Summary)

CVSS v4.0

5.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions QNAP QTS versions prior to 5.2.6.3195 build 20250715 QNAP QuTS hero versions prior to 5.2.6.3195 build 20250715

Description A NULL pointer dereference issue exists in QNAP operating systems. A remote attacker gaining administrator access can exploit this to cause a denial-of-service (DoS) attack.

Recommendations Update QTS to version 5.2.6.3195 build 20250715 or later. Update QuTS hero to version 5.2.6.3195 build 20250715 or later.

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2025-52859

Affected Products

Qts

Quts Hero

References · 6

• https://qnap.com/en/security-advisory/qsa-25-36 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-52859 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-52859 · Security Note
• https://twitter.com/CVEnew/status/1974177822412349694 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1974218619367075984 · Twitter Post
• https://t.me/CVEtracker/34028 · Telegram Post