PatchTheCVECVE-2021-25689: An out of bounds write in Teradici PCoIP soft client versions prior to version 20.10.1 could allow an attacker
CVE-2021-25689 is a critical-severity flaw (CVSS 9.8) affecting pcoip soft client, pcoip soft client, pcoip soft client. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
An out of bounds write in Teradici PCoIP soft client versions prior to version 20.10.1 could allow an attacker to remotely execute code.
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.6% (top 25%) |
| CISA exploited list | No |
| Weakness | CWE-787 |
| Published | 2021-02-11 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
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-2021-25689?
pcoip soft client: upgrade to newer than 20.10.0; pcoip soft client: upgrade to newer than 20.10.0; pcoip soft client: upgrade to newer than 20.10.0. Exact commands for each OS are on this page.
Is CVE-2021-25689 being exploited?
CVE-2021-25689 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-2021-25689 affect?
CVE-2021-25689 affects pcoip soft client, pcoip soft client, pcoip soft client. Severity is critical (CVSS 9.8). An out of bounds write in Teradici PCoIP soft client versions prior to version 20.10.1 could allow an attacker to remotely execute code.
How urgent is CVE-2021-25689?
Priority 58/100. Critical severity; Remotely exploitable, no login, no user action
Related CVEs
- CVE-2021-25690 HIGH 7.5 UPGRADE UPGRADE A null pointer dereference in Teradici PCoIP Soft Client versions prior to 20.07.3 could allow an attacker to