Bignerd95

**Name of the Vulnerable Software and Affected Versions** Grandstream HT800 series firmware version 1.0.17.5 and below **Description** The issue concerns a backdoor in the SSH service, allowing an authenticated remote attacker to obtain a root shell by correctly answering a challenge prompt. **Recommendations** For Grandstream HT800 series firmware version 1.0.17.5 and below, update to a version above 1.0.17.5 to remove the backdoor from the SSH service.