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Pion DTLS CVE-2026-54908

| EUVDEUVD-2026-41133 MEDIUM
Out-of-bounds Read (CWE-125)
2026-07-01 GitHub_M
6.3
CVSS 4.0 · Vendor: GitHub_M
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Severity by source

Vendor (GitHub_M) PRIMARY
6.3 MEDIUM
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
vuln.today AI
3.7 LOW

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.

3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
4.0 AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

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
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

3
Patch available
Jul 01, 2026 - 21:02 EUVD
Analysis Generated
Jul 01, 2026 - 20:20 vuln.today
CVE Published
Jul 01, 2026 - 19:34 cve.org
MEDIUM 6.3

DescriptionCVE.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

Access
Identify DTLS service accepting ECDHE_PSK
Delivery
Initiate DTLS handshake over UDP
Exploit
Negotiate ECDHE_PSK cipher suite
Execution
Send crafted malformed ServerKeyExchange message
Persist
Trigger out-of-bounds read in pion/dtls parser
Impact
Go runtime panic crashes server process

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.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-54908 vulnerability details – vuln.today

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