ZDI-26-561: (Pwn2Own) Home Assistant Green go2rtc Command Injection Remote Code Execution Vulnerability
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Home Assistant Green. An attacker must first obtain the ability to access the device's localhost interface. The ZDI has assigned a CVSS rating of 7.5.
AI Analysis
Technical Summary
The vulnerability in Home Assistant Green involves the go2rtc process improperly validating user-supplied strings before using them in system calls, enabling command injection. An attacker must have network adjacency and access to the localhost interface of the device to exploit this flaw. Successful exploitation allows arbitrary code execution with root privileges. The issue was reported on 2025-11-05 and publicly disclosed on 2026-08-12. The fix is available in go2rtc version 1.9.14 and the updated Home Assistant Green release.
Potential Impact
An attacker who can access the device's localhost interface can execute arbitrary code as root, potentially leading to full system compromise, including confidentiality, integrity, and availability impacts.
Mitigation Recommendations
A fix is available. Users should update to go2rtc version 1.9.14 and the corresponding patched version of Home Assistant Green as indicated in the vendor advisory. Applying these updates will remediate the vulnerability.
ZDI-26-561: (Pwn2Own) Home Assistant Green go2rtc Command Injection Remote Code Execution Vulnerability
Description
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Home Assistant Green. An attacker must first obtain the ability to access the device's localhost interface. The ZDI has assigned a CVSS rating of 7.5.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in Home Assistant Green involves the go2rtc process improperly validating user-supplied strings before using them in system calls, enabling command injection. An attacker must have network adjacency and access to the localhost interface of the device to exploit this flaw. Successful exploitation allows arbitrary code execution with root privileges. The issue was reported on 2025-11-05 and publicly disclosed on 2026-08-12. The fix is available in go2rtc version 1.9.14 and the updated Home Assistant Green release.
Potential Impact
An attacker who can access the device's localhost interface can execute arbitrary code as root, potentially leading to full system compromise, including confidentiality, integrity, and availability impacts.
Mitigation Recommendations
A fix is available. Users should update to go2rtc version 1.9.14 and the corresponding patched version of Home Assistant Green as indicated in the vendor advisory. Applying these updates will remediate the vulnerability.
Technical Details
- Classification
- {"confidence":0.95,"severitySource":"cvss-text","classifier":"rss-v2"}
- Article Source
- {"url":"http://www.zerodayinitiative.com/advisories/ZDI-26-561/","fetched":true,"fetchedAt":"2026-08-12T20:03:13.789Z","wordCount":187}
Threat ID: 6a7cd317bf8831d5391487b6
Added to database: 08/12/2026, 20:09:59 UTC
Last enriched: 08/12/2026, 20:10:41 UTC
Last updated: 08/12/2026, 20:21:45 UTC
Views: 2
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