CVE-2026-11493: Tenda AC15 Samba smb.conf weak password
A weakness has been identified in Tenda AC15 15.03.05.19. The impacted element is an unknown function of the file /etcro/smb.conf of the component Samba. Executing a manipulation can lead to weak password requirements. The attack is only possible within the local network. A high complexity level is associated with this attack. The exploitability is regarded as difficult. The exploit has been made available to the public and could be used for attacks.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Configuration
Edit /etc_ro/smb.conf on the Tenda AC15 to configure and enforce stronger password requirements for Samba (e.g., enable password complexity rules, set an increased minimum password length, and enable account lockout/timeouts) so weak passwords cannot be accepted.
Samba (/etc_ro/smb.conf) password requirements = enforce strong password complexity and minimum length - Compensating control
Restrict access to the device's SMB/Samba service to trusted hosts only (use firewall rules, ACLs, VLAN segmentation or similar) or disable the Samba/SMB service entirely if not required, since the attack is only possible from the local network.
- Operational
After applying configuration changes or access restrictions, rotate/change all passwords used for accounts that authenticate via the device's Samba service to remediate any potentially weak credentials.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-11493?
The severity of CVE-2026-11493 is medium, rated at 5.
What is the risk associated with CVE-2026-11493?
CVE-2026-11493 has a risk score of 39.
How do I fix CVE-2026-11493?
To fix CVE-2026-11493, ensure that strong password requirements are enforced in the Samba configuration of the Tenda AC15.
Is CVE-2026-11493 exploitable remotely?
CVE-2026-11493 is not exploitable remotely and requires local network access.
What component is affected by CVE-2026-11493?
CVE-2026-11493 affects the Samba component of the Tenda AC15.