Critical severity · published Nov 30, 2025
CVE-2025-35028
HexStrike AI MCP Server Command Injection
9.1
CVSS
5.3%
EPSS
No
On KEV
Description
By providing a command-line argument starting with a semi-colon ; to an API endpoint created by the EnhancedCommandExecutor class of the HexStrike AI MCP server, the resultant composed command is executed directly in the context of the MCP server’s normal privilege; typically, this is root. There is no attempt to sanitize these arguments in the default configuration of this MCP server at the affected version (as of commit 2f3a5512 in September of 2025).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.3% · higher than 93% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HA
HexStrike AI · 0x4m4
33267047667b9accfbf0fdac1c1c7ff12f3a5512 · source: vendor
Affected product
HA
HexStrike AI
0x4m4
More from HexStrike AI
8.3
CVE-2026-90691
0x4m4 HexStrike AI API Files Endpoint hexstrike_server.py FileOperationsManager path traversal
7.3
CVE-2026-90690
0x4m4 HexStrike AI API Tools Endpoint hexstrike_server.py subprocess.Popen os command injection
7.3
CVE-2026-90620
0x4m4 HexStrike AI API Command Endpoint hexstrike_server.py missing authentication
7.3
CVE-2026-90619
0x4m4 HexStrike AI Execute Endpoint hexstrike_server.py os command injection