VULNERABILITY INTELLIGENCE

CVE-2021-28797

CVSS score9.8 CRITICAL
EPSS probability5.91%
CISA KEVNot currently listed
Published2021-04-14
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

A stack-based buffer overflow vulnerability has been reported to affect QNAP NAS devices running Surveillance Station. If exploited, this vulnerability allows attackers to execute arbitrary code. QNAP have already fixed this vulnerability in the following versions: Surveillance Station 5.1.5.4.3 (and later) for ARM CPU NAS (64bit OS) and x86 CPU NAS (64bit OS) Surveillance Station 5.1.5.3.3 (and later) for ARM CPU NAS (32bit OS) and x86 CPU NAS (32bit OS)

Weakness classification

  • CWE-121: Stack-based Buffer Overflow
  • CWE-787: Out-of-bounds Write

Primary references