PatchTheCVECVE-2022-28054: Improper sanitization of trigger action scripts in VanDyke Software VShell for Windows v4.6.2 allows attackers
CVE-2022-28054 is a critical-severity flaw (CVSS 9.8) affecting vshell. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Improper sanitization of trigger action scripts in VanDyke Software VShell for Windows v4.6.2 allows attackers to execute arbitrary code via a crafted value.
Why this priority
- Critical severity
- EPSS top 2%: very likely to be exploited
- 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 | 31.9% (top 2%) |
| CISA exploited list | No |
| Published | 2022-05-02 |
| 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-2022-28054?
vshell: upgrade to 4.6.3. Exact commands for each OS are on this page.
Is CVE-2022-28054 being exploited?
CVE-2022-28054 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-2022-28054 affect?
CVE-2022-28054 affects vshell. Severity is critical (CVSS 9.8). Improper sanitization of trigger action scripts in VanDyke Software VShell for Windows v4.6.2 allows attackers to execute arbitrary code via a crafted value.
How urgent is CVE-2022-28054?
Priority 64/100. Critical severity; EPSS top 2%: very likely to be exploited; Remotely exploitable, no login, no user action