Falcon sensor
CVE-2025-1146: CrowdStrike Falcon Sensor for Linux TLS Issue
CrowdStrike uses industry-standard TLS (transport layer security) to secure communications from the Falcon sensor to the CrowdStrike cloud.
Published
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Falcon sensor for Linux (Linux) 7.21 | Not affected |
| Falcon sensor for Linux (Linux) 7.20 | 7.20.17308 or later |
| Falcon sensor for Linux (Linux) 7.19 | 7.19.17221 or later |
| Falcon sensor for Linux (Linux) 7.18 | 7.18.17131 or later |
| Falcon sensor for Linux (Linux) 7.17 | 7.17.17014 or later |
| Falcon sensor for Linux (Linux) 7.16 | 7.16.16909 or later |
| Falcon sensor for Linux (Linux) 7.15 | 7.15.16806 or later |
| Falcon sensor for Linux (Linux) 7.14 | 7.14.16705 or later |
| Falcon sensor for Linux (Linux) 7.13 | 7.13.16606 or later |
| Falcon sensor for Linux (Linux) 7.11 | 7.11.16410 or later |
| Falcon sensor for Linux (Linux) 7.10 | 7.10.16321 or later |
| Falcon sensor for Linux (Linux) 7.07 | 7.07.16209 or later |
| Falcon sensor for Linux (Linux) 7.06 | 7.06.16113 or later |
| Falcon Kubernetes Admission Controller (Linux) 7.21 | Not affected |
| Falcon Kubernetes Admission Controller (Linux) 7.20 | 7.20.1808 or later |
| Falcon Kubernetes Admission Controller (Linux) 7.18 | 7.18.1605 or later |
| Falcon Kubernetes Admission Controller (Linux) 7.17 | 7.17.1503 or later |
| Falcon Kubernetes Admission Controller (Linux) 7.16 | 7.16.1403 or later |
| Falcon Kubernetes Admission Controller (Linux) 7.14 | 7.14.1203 or later |
| Falcon Kubernetes Admission Controller (Linux) 7.13 | 7.13.1102 or later |
| Falcon Kubernetes Admission Controller (Linux) 7.12 | 7.12.1002 or later |
| Falcon Kubernetes Admission Controller (Linux) 7.11 | 7.11.904 or later |
| Falcon Kubernetes Admission Controller (Linux) 7.10 | 7.10.806 or later |
| Falcon Kubernetes Admission Controller (Linux) 7.06 | 7.06.603 or later |
| Falcon Container Sensor (Linux) 7.21 | Not affected |
| Falcon Container Sensor (Linux) 7.20 | 7.20.5908 or later |
| Falcon Container Sensor (Linux) 7.19 | 7.19.5807 or later |
| Falcon Container Sensor (Linux) 7.18 | 7.18.5705 or later |
| Falcon Container Sensor (Linux) 7.17 | 7.17.5603 or later |
| Falcon Container Sensor (Linux) 7.16 | 7.16.5503 or later |
| Falcon Container Sensor (Linux) 7.15 | 7.15.5403 or later |
| Falcon Container Sensor (Linux) 7.14 | 7.14.5306 or later |
| Falcon Container Sensor (Linux) 7.13 | 7.13.5202 or later |
| Falcon Container Sensor (Linux) 7.12 | 7.12.5102 or later |
| Falcon Container Sensor (Linux) 7.11 | 7.11.5003 or later |
| Falcon Container Sensor (Linux) 7.10 | 7.10.4907 or later |
| Falcon Container Sensor (Linux) 7.06 | 7.06.4705 or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
CrowdStrike uses industry-standard TLS (transport layer security) to secure communications from the Falcon sensor to the CrowdStrike cloud. CrowdStrike has identified a validation logic error in the Falcon sensor for Linux, Falcon Kubernetes Admission Controller, and Falcon Container Sensor where our TLS connection routine to the CrowdStrike cloud can incorrectly process server certificate validation. This could allow an attacker with the ability to control network traffic to potentially conduct a man-in-the-middle (MiTM) attack. CrowdStrike identified this issue internally and released a security fix in all Falcon sensor for Linux, Falcon Kubernetes Admission Controller, and Falcon Container Sensor versions 7.06 and above.
CrowdStrike identified this issue through our longstanding, rigorous security review process, which has been continually strengthened with deeper source code analysis and ongoing program enhancements as part of our commitment to security resilience. CrowdStrike has no indication of any exploitation of this issue in the wild. CrowdStrike has leveraged its world class threat hunting and intelligence capabilities to actively monitor for signs of abuse or usage of this flaw and will continue to do so.
Windows and Mac sensors are not affected by this.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 10 Oct 2026.