CVE-2022-28054Vshell Vulnerability
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.
Published May 2, 2022 · Updated Nov 21, 2024
Key Facts
Patch immediately- CVE-2022-28054 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Vshell (Vandyke).
- It is exploited in the wild, listed in Industry KEV feed since Oct 20, 2025. No public exploit code is known.
- EPSS estimates a 32% probability of exploitation in the next 30 days.
- Fixed versions are available, including Vshell 4.6.3.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
32%
Higher than 98.3% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
51/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Oct 20, 2025
1267 days after publication
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
0
Proof-of-concept links
In-the-wild evidence
1
Reports of active use
Advisories And Exploit References
Description
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Oct 20, 2025 | n/a | Not reported |
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| VshellVandyke | See advisory | 4.6.3 |
Patched Releases
Vshell
4.6.3
Timeline
Publicly disclosed
May 2, 2022
Last updated
Nov 21, 2024
Added to Industry KEV feed
Oct 20, 2025
References
FAQ
Common Questions.
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.
Affected: Vshell (Vandyke). The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Oct 20, 2025.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Vshell 4.6.3.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2022-28054 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
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