Path traversal in EyeLock nano NXT lets attackers read local files
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.
Summary
EyeLock nano NXT versions 3.05.1193, 3.04.1108, 3.03.944 and 3.01.646 are affected. A path traversal flaw (CWE-22) in the path parameter of logdownload.php lets unauthenticated remote attackers read arbitrary files, because readfile() returns the requested path without validation. A public proof of concept is linked in the references, and the Shadowserver Foundation first observed exploitation on 2023-10-19.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
EyeLock nano NXT 3.05.1193, 3.04.1108, 3.03.944, and 3.01.646 contain a path traversal vulnerability that allows unauthenticated attackers to read arbitrary files via the 'path' parameter. Attackers can send GET requests to /scripts/logdownload.php with traversal sequences like ../../etc/passwd, which readfile() returns unvalidated, disclosing local system files. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-19.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for EyeLock nano NXT.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Timeline
- 2026-10-20 Threatist record created from CVE-2016-20104
- 2026-10-21 Alias added: GHSA-r7vf-jgv9-h5jm
- 2026-10-22 Priority changed: MEDIUM → LOW
- 2026-10-23 CISA SSVC decision points changed
- 2026-10-23 Priority changed: LOW → HIGH
References
Exploit 2
Other 1
Sources
- CVE-2016-20104 · CVE Program
- CVE-2016-20104 · NVD
- FIRST EPSS
- GHSA-r7vf-jgv9-h5jm · GitHub Advisory Database · CC BY 4.0
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