CVE-2026-19924 in AC10
Summary
by MITRE • 08/16/2026
A security vulnerability has been detected in Tenda AC10 16.03.10.09_multi_TDE01. This vulnerability affects the function R7WebsSecurityHandler of the component httpd. The manipulation leads to improper authentication. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used.
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Analysis
by VulDB Data Team • 08/23/2026
This vulnerability in Tenda AC10 router firmware version 16.03.10.09_multi_TDE01 represents a critical authentication flaw within the httpd component that enables remote exploitation. The specific function R7WebsSecurityHandler contains a weakness that allows attackers to bypass legitimate authentication mechanisms, potentially granting unauthorized access to the device's administrative interface. This vulnerability falls under the category of improper authentication as defined by CWE-287, where the system fails to properly verify user credentials before granting access to protected resources.
The technical implementation of this flaw suggests that the R7WebsSecurityHandler function does not adequately validate authentication tokens or session management parameters, creating a pathway for malicious actors to gain administrative privileges without proper authorization. The remote exploit capability means that attackers can leverage this vulnerability from outside the local network without requiring physical access or prior credentials. This type of vulnerability aligns with ATT&CK technique T1078 which covers valid accounts and privilege escalation through authentication bypass mechanisms.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it could enable attackers to modify router configurations, install malicious firmware, redirect traffic through the compromised device, or use it as a pivot point for further attacks within the network. Network administrators may find their devices under attack without proper logging or detection capabilities, since the authentication bypass occurs at the web interface level where normal security monitoring might not be effective. The public disclosure of exploitation methods accelerates the risk profile significantly, as threat actors can immediately implement known attack patterns against vulnerable devices.
Mitigation strategies should include immediate firmware updates from Tenda to address the authentication flaw, network segmentation to limit exposure of affected devices, and implementation of network monitoring to detect unusual traffic patterns that might indicate exploitation attempts. Additionally, administrators should disable remote management features where possible and enforce strong password policies for all administrative accounts. The vulnerability demonstrates the importance of proper input validation and authentication handling in embedded web servers, as outlined in OWASP Top Ten category A07:2021 which addresses identification and authentication failures. Organizations should also consider implementing intrusion detection systems specifically configured to monitor for known exploitation patterns targeting router firmware vulnerabilities.