CVE-2022-1805: When connecting to Amazon Workspaces, the SHA256 presented by AWS connection provisioner is not fully verified

Q: How do I fix CVE-2022-1805?

tera2 pcoip zero client firmware: upgrade to 22.01.5. Exact commands for each OS are on this page.

Q: Is CVE-2022-1805 being exploited?

CVE-2022-1805 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-1805 affect?

CVE-2022-1805 affects tera2 pcoip zero client firmware. Severity is high (CVSS 8.1). 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 AW

Q: How urgent is CVE-2022-1805?

Priority 51/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

This month

HIGH 8.1REMOTEWATCHLISTUPGRADE

CVE-2022-1805 is a high-severity flaw (CVSS 8.1) affecting tera2 pcoip zero client firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 this priority

High severity
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-295
Published	2022-07-28
Last modified	2026-06-17

Publisher (CNA): HP Inc. · Vendor: teradici

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-07-28 15:15 UTCPublished CVE record published
2026-06-17 04:23 UTCUpdated Record last modified

teradici tera2 pcoip zero client firmware UPGRADE

Affected: < 22.01.5 · 22.04

Fixed in: 22.01.5

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-1805?

tera2 pcoip zero client firmware: upgrade to 22.01.5. Exact commands for each OS are on this page.

Is CVE-2022-1805 being exploited?

CVE-2022-1805 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-1805 affect?

CVE-2022-1805 affects tera2 pcoip zero client firmware. Severity is high (CVSS 8.1). 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 AW

How urgent is CVE-2022-1805?

Priority 51/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

Software pages

AWS vulnerabilities

References

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