Path traversal in QNAP QcalAgent exposes unexpected files
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
QNAP QcalAgent from 1.1.x before 1.1.10 is affected by a path traversal flaw (CWE-22) that lets a remote attacker who holds a user account read the contents of unexpected files or system data. The attacker needs only a valid user account, and the flaw is reachable over the network.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
A path traversal vulnerability has been reported to affect QcalAgent. If a remote attacker gains a user account, they can then exploit the vulnerability to read the contents of unexpected files or system data. We have already fixed the vulnerability in the following version: QcalAgent 1.1.10 and later
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Update QNAP QcalAgent to version 1.1.10 or later, which fixes the vulnerability. The sources do not list a separate vendor advisory identifier.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
- Fix · CNA QcalAgent (QNAP Systems Inc.) Fixed in 1.1.10
Timeline
- 2026-10-15 Threatist record created from CVE-2026-41544
- 2026-10-16 Alias added: GHSA-pw2w-wj8f-48p9
- 2026-10-16 CISA SSVC decision points changed
- 2026-10-16 Priority changed: MEDIUM → LOW
- 2026-10-16 Priority changed: LOW → MEDIUM
References
More QNAP vulnerabilities
- TI-2022-10581 DeadBolt Ransomware KEVCVSS 3.1CRITICAL 10.0
- TI-2021-09791 Improper Authorization Vulnerability in HBS 3 (Hybrid Backup Sync) KEVCVSS 3.1CRITICAL 10.0
- TI-2020-02221 Command Injection Vulnerability in QTS and QuTS hero KEVCVSS 3.1CRITICAL 9.8
- TI-2019-05103 Path traversal in QNAP NAS devices running Photo Station KEVCVSS 3.1CRITICAL 9.8
- TI-2019-05102 Path traversal in QNAP NAS devices running Photo Station KEVCVSS 3.1CRITICAL 9.8
- TI-2019-05101 Improper input validation in QNAP NAS devices KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-41544 · CVE Program
- CVE-2026-41544 · NVD
- FIRST EPSS
- GHSA-pw2w-wj8f-48p9 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences