Severity by source
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
AC:H reflects that ECDHE_PSK cipher suite must be active (mapping CVSS 4.0 AT:P); no confidentiality or integrity impact confirmed by available data.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3DescriptionCVE.org
Pion DTLS is a Go implementation of Datagram Transport Layer Security. Versions prior to 3.1.4 are vulnerable to Remote Denial of Service via panic while parsing a crafted ECDHE_PSK ServerKeyExchange message. This issue has been fixed in version 3.1.4.
AnalysisAI
Remote denial of service in pion/dtls (Go's DTLS implementation) versions prior to 3.1.4 allows an unauthenticated network attacker to crash any application built on this library by sending a crafted ECDHE_PSK ServerKeyExchange message during the DTLS handshake. The CWE-125 out-of-bounds read triggers a Go runtime panic, immediately terminating the host process. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the target application to be running pion/dtls at a version prior to 3.1.4 and to be accepting DTLS connections that negotiate the ECDHE_PSK key exchange cipher suite. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N) scores 6.3. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker identifies a service listening on UDP that uses pion/dtls prior to 3.1.4 and supports ECDHE_PSK cipher suites. The attacker initiates a DTLS handshake, negotiates the ECDHE_PSK cipher suite, and then sends a malformed ServerKeyExchange message with an unexpected or truncated payload. … |
| Remediation | Vendor-released patch: pion/dtls 3.1.4. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Pion DTLS is a Go implementation of Datagram Transport Layer Security. Rated high severity (CVSS 7.5), this vulnerabilit
Pion DTLS is a Go implementation of Datagram Transport Layer Security. Rated high severity (CVSS 7.5), this vulnerabilit
Pion DTLS is a Go implementation of Datagram Transport Layer Security. [CVSS 5.9 MEDIUM]
Pion DTLS is a Go implementation of Datagram Transport Layer Security. Rated medium severity (CVSS 5.3), this vulnerabil
Same weakness CWE-125 – Out-of-bounds Read
View allSame technique Denial Of Service
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-41133