CVE-2026-2147 Details
Description
A weakness has been identified in Tenda AC21 16.03.08.16. This impacts an unknown function of the file /cgi-bin/DownloadLog of the component Web Management Interface. Executing a manipulation can lead to information disclosure. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks.
An information disclosure vulnerability has been identified in the Tenda AC21 router, specifically in version 16.03.08.16. The issue arises from the web management interface's '/cgi-bin/DownloadLog' and '/cgi-bin/DownloadSyslog' paths, which lack proper authentication and authorization checks. This flaw allows remote attackers to bypass login requirements and download sensitive system logs. These logs may contain internal IP addresses, network topology, device MAC addresses, connection records, system error messages, debugging information, and potential login attempt records, including usernames and failed password attempts.
It is recommended to implement strict authentication checks for the affected CGI paths, restrict access to trusted internal IP addresses, mask sensitive information in logs before transmission, and remove any debugging interfaces from official firmware releases.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Feb 10, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/master-abc/cve/issues/30 | [email protected] | ExploitIssue TrackingThird Party Advisory |
| https://vuldb.com/?ctiid.344849 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.344849 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.747429 | [email protected] | Third Party AdvisoryVDB Entry |
| https://www.tenda.com.cn/ | [email protected] | Product |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-200 | Exposure of Sensitive Information to an Unauthorized Actor | [email protected] |
| CWE-284 | Improper Access Control | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| tenda ac21 firmware | 16.03.08.16 |
CPE
Remediation
| |
| tenda ac21 | All versions |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Feb 10, 2026 | Initial Analysis | [email protected] |
| Feb 8, 2026 | New CVE Received | [email protected] |