CVE-2025-35028
CVE-2025-35028 is a critical-severity vulnerability with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.
Key facts
- Severity: Critical (CVSS 3.x base score 9.1)
- EPSS exploit prediction: 5% (91st percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-199938
- Weakness: CWE-78
- Published:
- Last modified:
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).
Frequently asked questions
- What is CVE-2025-35028?
- 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).
- How severe is CVE-2025-35028?
- CVE-2025-35028 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
- Is CVE-2025-35028 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-35028?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2025-35028 have an EU (EUVD) identifier?
- Yes. CVE-2025-35028 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199938.
- When was CVE-2025-35028 published?
- CVE-2025-35028 was published on 2025-11-30 and last updated on 2026-06-17.
References
- https://github.com/0x4m4/hexstrike-ai/issues/115
- https://takeonme.org/gcves/GCVE-1337-2025-00000000000000000000000000000000000000000000000000111111111111111111111111000000000000000000000000000000000000000000000000000000011
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