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vuln.today
AI
7.5
HIGH
Network-reachable daemon, no auth required at greeting phase, sole impact is availability loss via daemon exit.
3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Red Hat
HIGH
qualitative
Lifecycle Timeline
1
Analysis Generated
Aug 14, 2026 - 20:11 vuln.today
DescriptionCVE.org
[GHSA-38fq-mrrg-8rmr: RtlTcp: malformed greeting causes daemon exit]
AnalysisAI
Denial of service in the rtl_tcp SDR network daemon allows an unauthenticated remote attacker to crash the daemon by sending a malformed greeting during the TCP handshake phase, causing an unhandled exit. The affected software is the rtl_tcp server component, which exposes RTL-SDR radio hardware over a network socket. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Access
Reach rtl_tcp TCP port
Delivery
Send malformed greeting payload
Exploit
Trigger unhandled exit path
Execution
Daemon process terminates
Impact
SDR service unavailable
Access
Reach rtl_tcp TCP port
Delivery
Send malformed greeting payload
Exploit
Trigger unhandled exit path
Execution
Daemon process terminates
Impact
SDR service unavailable
Vulnerability AssessmentAI
| Exploitation | The daemon must be running and its TCP listening port (default 1234) must be reachable by the attacker over the network. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | No CVSS vector, EPSS score, or KEV listing was provided, which significantly limits quantitative risk assessment. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who can reach the rtl_tcp daemon over the network - for example, on a host where the port is exposed without firewall restriction - sends a crafted TCP connection with a malformed or truncated greeting sequence. The daemon fails to handle the malformed input and exits, interrupting SDR data streaming for all connected clients until the process is manually or automatically restarted. … |
| Remediation | The primary remediation is to apply the patch distributed by Ubuntu for the rtl-sdr package once available; check the Ubuntu Security Notices (USN) and the Ubuntu package changelog for an updated version. … Detailed patch versions, workarounds, and compensating controls in full report. |
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