Unauthenticated data access via path traversal
Published Jul 2, 2026 · Updated Jul 2, 2026
Path traversal in Ubiquiti UniFi OS before 5.1.19 allows remote attackers to bypass device or instance authentication. Ubiquiti has not disclosed the affected request handler, pathname input, or restricted resource reached through traversal. Network access is sufficient and no credentials or user interaction are required; successful exploitation exposes data protected by authentication.
Summary
What happened
Path traversal in Ubiquiti UniFi OS before 5.1.19 allows remote attackers to bypass device or instance authentication. Ubiquiti has not disclosed the affected request handler, pathname input, or restricted resource reached through traversal. Network access is sufficient and no credentials or user interaction are required; successful exploitation exposes data protected by authentication.
The record
- CVE
- CVE-2026-54403
- Published
- Jul 2, 2026
- Updated
- Jul 2, 2026
- Vendor
- Ubiquiti Inc.
- Product
- Enterprise NVR
- Classifications
- CWE-22, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 2, 2026CVE publishedPublication date reported by the CVE source.
- Jul 2, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <5.1.19
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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