The addon.stdin service in addon-ssh (aka Home Assistant Community Add-on: SSH & Web…
Priority MEDIUM 43Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
The addon.stdin service in addon-ssh (aka Home Assistant Community Add-on: SSH & Web Terminal) before 10.0.0 has an attack surface that requires social engineering. NOTE: the vendor does not agree that this is a vulnerability; however, addon.stdin was removed as a defense-in-depth measure against complex social engineering situations
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01336 71st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ssh_\&_web_terminal_project:ssh_\&_web_terminal:*:*:*:*:*:home_assistant:*:* | before 10.0.0 | Vulnerable | Ssh & Web Terminal Project |
- cpe:2.3:a:ssh_\&_web_terminal_project:ssh_\&_web_terminal:*:*:*:*:*:home_assistant:*:* Versions before 10.0.0 Vulnerable ·Ssh & Web Terminal Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-45099
- 2026-10-03 Alias added: GHSA-p533-v77v-4gcf
References
Sources
- CVE-2021-45099 · CVE Program
- CVE-2021-45099 · NVD
- FIRST EPSS
- GHSA-p533-v77v-4gcf · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences