MiNiFi CPP arbitrary script execution is possible on the agent's host machine through the c2 protocol
Priority MEDIUM 49CWE-78Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-78.
Summary
From Apache NiFi MiNiFi C++ version 0.5.0 the c2 protocol implements an "agent-update" command which was designed to patch the application binary. This "patching" command defaults to calling a trusted binary, but might be modified to an arbitrary value through a "c2-update" command. Said command is then executed using the same privileges as the application binary. This was addressed in version 0.10.0
Why it matters now
EPSS 0.04024 90th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-33191
- 2026-10-03 Alias added: GHSA-h5f6-7m57-f2rg
References
Advisory 2
More Apache Nifi Minifi C++ vulnerabilities
- TI-2023-21789 Apache NiFi MiNiFi C++: Incorrect Certificate Validation in InvokeHTTP for MiNiFi C++ CVSS 3.1MEDIUM 5.9
Sources
- CVE-2021-33191 · CVE Program
- CVE-2021-33191 · NVD
- FIRST EPSS
- GHSA-h5f6-7m57-f2rg · GitHub Advisory Database · CC BY 4.0
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