CVE-2026-26241: CWE-121 in QNAP Systems Inc. File Station 5
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
AI Analysis
Technical Summary
This vulnerability (CWE-121) in QNAP File Station 5 is a buffer overflow that can be exploited remotely without privileges or user interaction. Exploitation may lead to memory modification or process crashes. The issue affects version 5.5.0 and was fixed in version 5.5.6.5243. No known exploits are reported in the wild. The CVSS 4.0 vector indicates network attack vector, low complexity, no privileges required, partial impact on integrity and availability, and no impact on confidentiality.
Potential Impact
Successful exploitation could allow remote attackers to modify memory or cause process crashes, potentially disrupting service or stability. The impact is limited given the low CVSS score and partial integrity and availability impact without confidentiality loss.
Mitigation Recommendations
Upgrade File Station 5 to version 5.5.6.5243 or later where the vulnerability is fixed. No other mitigation guidance is provided or required.
CVE-2026-26241: CWE-121 in QNAP Systems Inc. File Station 5
Description
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 v4.0
Score 1.3low
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-121) in QNAP File Station 5 is a buffer overflow that can be exploited remotely without privileges or user interaction. Exploitation may lead to memory modification or process crashes. The issue affects version 5.5.0 and was fixed in version 5.5.6.5243. No known exploits are reported in the wild. The CVSS 4.0 vector indicates network attack vector, low complexity, no privileges required, partial impact on integrity and availability, and no impact on confidentiality.
Potential Impact
Successful exploitation could allow remote attackers to modify memory or cause process crashes, potentially disrupting service or stability. The impact is limited given the low CVSS score and partial integrity and availability impact without confidentiality loss.
Mitigation Recommendations
Upgrade File Station 5 to version 5.5.6.5243 or later where the vulnerability is fixed. No other mitigation guidance is provided or required.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- qnap
- Date Reserved
- 2026-02-12T02:21:35.483Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a28f1e98dd33fbd85e94444
Added to database: 06/10/2026, 05:11:05 UTC
Last enriched: 06/17/2026, 07:38:45 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 64
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