CVE-2021-33191 json
MiNiFi CPP arbitrary script execution is possible on the agent's host machine through the c2 protocol
published 2021-08-24 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-19906
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 4.0%
- EPSS 4.0% chance of exploitation in 30 days, percentile 90%
- public exploits
- 0
- none known
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
Patch / fix
- Apache Software Foundation Apache NiFi - MiNiFi C++ 0.10.0
Exploit prediction
4.02% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- Apache Software Foundation Apache NiFi - MiNiFi C++
Classification
- Weakness
-
- CWE-78 Improper Neutralization of Special Elements used in an OS Command
References
-
openwall.com
/lists/oss-security/2021/08/24/1
mailing-list, third-party-advisory
-
openwall.com
/lists/oss-security/2021/08/24/1
mailing-list, third-party-advisory
-
lists.apache.org
/thread.html/r6f27a2454f5f67dbe4e21c8eb1db537b01863a0bc3758f28aa60f032%40%3Cannounce.apache.org%3E
mailing-list
Sources
- CVE List CVE-2021-33191
- NVD CVE-2021-33191
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