Fastd is a lightweight VPN daemon designed for community networks and mesh deployments, with a focused vulnerability footprint centered on its core tunneling product. The recurring signals center on denial-of-service vectors through asymmetric resource consumption and amplification mechanisms, along with assertion failures in protocol handling—weakness classes reflective of the parser and state-machine demands inherent to a network tunnel implementation. Current severity, exploitation, and exposure counts are shown alongside this summary.
The number and severity of CVEs published that impact products developed by Fastd Project over time
Signals from CVEs in this vendor scope (2 CVEs).
2 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2020-27638HIGH receive.c in fastd before v21 allows denial of service (assertion failure) when receiving packets with an invalid type code. | Oct 22, 2020 | 7.5 | 25 | NO | NO |
CVE-2025-24356HIGH fastd is a VPN daemon which tunnels IP packets and Ethernet frames over UDP. When receiving a data packet from an unknown IP address/port combination, fastd will assume that one of | Jan 27, 2025 | 7.5 | 20 | NO | NO |
Signals from CVEs in this vendor scope (2 CVEs).
An overview of all social media posts that mention a CVE ID that affects a product developed by Fastd Project.
Media articles that mention a CVE ID that affects a product developed by Fastd Project — matched by CVE ID, not by vendor name.