CVE-2021-25701: The fUSBHub driver in the PCoIP Software Client prior to version 21.07.0 had an error in object management dur

Q: How do I fix CVE-2021-25701?

pcoip client: upgrade to 21.07.0. Exact commands for each OS are on this page.

Q: Is CVE-2021-25701 being exploited?

CVE-2021-25701 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-2021-25701 affect?

CVE-2021-25701 affects pcoip client. Severity is medium (CVSS 5.5). The fUSBHub driver in the PCoIP Software Client prior to version 21.07.0 had an error in object management during the handling of a variety of IOCTLs, which allowed an attacker to cause a denial of service.

Q: How urgent is CVE-2021-25701?

Priority 22/100. No elevated risk signals yet.

Routine

MEDIUM 5.5UPGRADE

CVE-2021-25701 is a medium-severity flaw (CVSS 5.5) affecting pcoip client. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The fUSBHub driver in the PCoIP Software Client prior to version 21.07.0 had an error in object management during the handling of a variety of IOCTLs, which allowed an attacker to cause a denial of service.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 87%)
CISA exploited list	No
Weakness	CWE-400, CWE-401
Published	2021-07-21
Last modified	2026-06-17

Publisher (CNA): Teradici Corporation · Vendor: teradici

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

Am I affected?

Timeline

2021-07-21 15:15 UTCPublished CVE record published
2026-06-17 03:42 UTCUpdated Record last modified

teradici pcoip client UPGRADE

Affected: < 21.07.0

Fixed in: 21.07.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy pcoip-client || rpm -q pcoip-client || pcoip-client --version

2. UPGRADE to 21.07.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade pcoip-client

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pcoip-client

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2021-25701?

pcoip client: upgrade to 21.07.0. Exact commands for each OS are on this page.

Is CVE-2021-25701 being exploited?

CVE-2021-25701 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-2021-25701 affect?

CVE-2021-25701 affects pcoip client. Severity is medium (CVSS 5.5). The fUSBHub driver in the PCoIP Software Client prior to version 21.07.0 had an error in object management during the handling of a variety of IOCTLs, which allowed an attacker to cause a denial of service.

How urgent is CVE-2021-25701?

Priority 22/100. No elevated risk signals yet.

Related CVEs

CVE-2021-25699 HIGH 7.8 UPGRADE The OpenSSL component of the Teradici PCoIP Software Client prior to version 21.07.0 was compiled without the

References

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