Configuration disclosure via empty Referer acceptance
Published Aug 12, 2026 · Updated Aug 12, 2026
Origin validation error in TP-Link TL-WR820N v2 before 1.15.20 Build 260611 Rel.29552n allows attackers to read configuration data. The web management interface treats a missing or empty HTTP Referer header as acceptable during request validation and processes the request. No credentials or user interaction are required, but the interface must be reachable from an adjacent network; the reported consequence is limited to device configuration details and other sensitive information.
Summary
What happened
Origin validation error in TP-Link TL-WR820N v2 before 1.15.20 Build 260611 Rel.29552n allows attackers to read configuration data. The web management interface treats a missing or empty HTTP Referer header as acceptable during request validation and processes the request. No credentials or user interaction are required, but the interface must be reachable from an adjacent network; the reported consequence is limited to device configuration details and other sensitive information.
The record
- CVE
- CVE-2026-15141
- Published
- Aug 12, 2026
- Updated
- Aug 12, 2026
- Vendor
- TP-Link Systems Inc.
- Product
- TL-WR820N
- Classifications
- CWE-346, CAPEC-104, T1602.002
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 12, 2026CVE publishedPublication date reported by the CVE source.
- Aug 12, 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 <1.15.20 Build 260611 Rel.29552n
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
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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