CVE-2021-33505
HIGHCVSS 7.8/10EPSS 0.35%
Last modified
CVE-2021-33505 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A local malicious user can circumvent the Falco detection engine through 0.28.1 by running a program that alters arguments of system calls being executed. Issue is fixed in Falco versions >= 0.29.1.. EPSS estimates a 0.35% chance of exploitation in the next 30 days.
Description
A local malicious user can circumvent the Falco detection engine through 0.28.1 by running a program that alters arguments of system calls being executed. Issue is fixed in Falco versions >= 0.29.1.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Falco | Falco | <= 0.28.1 |
References
- https://github.com/falcosecurity/falco/pull/1675Patch, Third Party Advisory
- https://github.com/falcosecurity/falco/releasesRelease Notes, Third Party Advisory
- https://github.com/falcosecurity/falco/pull/1675Patch, Third Party Advisory
- https://github.com/falcosecurity/falco/releasesRelease Notes, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-33505?
A local malicious user can circumvent the Falco detection engine through 0.28.1 by running a program that alters arguments of system calls being executed. Issue is fixed in Falco versions >= 0.29.1.
How severe is CVE-2021-33505?
CVE-2021-33505 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.35% probability of exploitation in the next 30 days.
How do I fix CVE-2021-33505?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-33505?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST