Improper certificate validation in Tera2 Zero Client
Priority LOW 36CWE-295Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-295.
Summary
When connecting to Amazon Workspaces, the SHA256 presented by AWS connection provisioner is not fully verified by Zero Clients. The issue could be exploited by an adversary that places a MITM (Man in the Middle) between a zero client and AWS session provisioner in the network. This issue is only applicable when connecting to an Amazon Workspace from a PCoIP Zero Client.
Why it matters now
EPSS 0.00635 50th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Tera2 Zero Client | Firmware version 22.04 and earlier | — | No fix listed | CNA |
- Tera2 Zero Client Vendor— Affected Firmware version 22.04 and earlier Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:teradici:tera2_pcoip_zero_client_firmware:*:*:*:*:*:*:*:* | before 22.01.5 | Vulnerable | Teradici |
| cpe:2.3:o:teradici:tera2_pcoip_zero_client_firmware:22.04:*:*:*:*:*:*:* | 22.04 | Vulnerable | Teradici |
| cpe:2.3:h:teradici:tera2_pcoip_zero_client:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Teradici |
- cpe:2.3:o:teradici:tera2_pcoip_zero_client_firmware:*:*:*:*:*:*:*:* Versions before 22.01.5 Vulnerable ·Teradici
- cpe:2.3:o:teradici:tera2_pcoip_zero_client_firmware:22.04:*:*:*:*:*:*:* Versions 22.04 Vulnerable ·Teradici
- cpe:2.3:h:teradici:tera2_pcoip_zero_client:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Teradici
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2022-1805
- 2026-10-03 Alias added: GHSA-mqfh-36p4-43qx
- 2026-10-25 EPSS moved to the 50th–90th percentile
Sources
- CVE-2022-1805 · CVE Program
- CVE-2022-1805 · NVD
- FIRST EPSS
- GHSA-mqfh-36p4-43qx · GitHub Advisory Database · CC BY 4.0
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