What is CVE-2021-25701?

CVE-2021-25701 is a medium-severity vulnerability in Teradici Pcoip Client, classified under Uncontrolled Resource Consumption. CVSS score: 5.5/10. Published 2021-07-21.

How severe is CVE-2021-25701?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Resource exhaustion in Teradici Pcoip Client

CVE-2021-25701

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.

Vulnerability class: DoS (Denial of Service)

Published 2021-07-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.002 (11.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 11.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Teradici Pcoip Client
- Pcoip Software Client — versions 21.07.0

Weakness classification (CWE)

References

advisory.teradici.com/security-advisories/103/ (Vendor Advisory)

Frequently asked questions

What is CVE-2021-25701?: CVE-2021-25701 is a medium-severity vulnerability in Teradici Pcoip Client, classified under Uncontrolled Resource Consumption. CVSS score: 5.5/10. Published 2021-07-21.
How severe is CVE-2021-25701?: Medium severity. CVSS v3 base score is 5.5 out of 10.