CVE-2025-59530 (GCVE-0-2025-59530)

Vulnerability from cvelistv5 – Published: 2025-10-10 16:09 – Updated: 2025-10-10 16:31
VLAI?
Title
quic-go has Client Crash Due to Premature HANDSHAKE_DONE Frame
Summary
quic-go is an implementation of the QUIC protocol in Go. In versions prior to 0.49.0, 0.54.1, and 0.55.0, a misbehaving or malicious server can cause a denial-of-service (DoS) attack on the quic-go client by triggering an assertion failure, leading to a process crash. This requires no authentication and can be exploited during the handshake phase. This was observed in the wild with certain server implementations. quic-go needs to be able to handle misbehaving server implementations, including those that prematurely send a HANDSHAKE_DONE frame. Versions 0.49.0, 0.54.1, and 0.55.0 discard Initial keys when receiving a HANDSHAKE_DONE frame, thereby correctly handling premature HANDSHAKE_DONE frames.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-617 - Reachable Assertion
  • CWE-755 - Improper Handling of Exceptional Conditions
Assigner
References
Impacted products
Vendor Product Version
quic-go quic-go Affected: < 0.49.1
Affected: >= 0.5.0, < 0.54.1
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                "id": "CVE-2025-59530",
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                "timestamp": "2025-10-10T16:31:32.909241Z",
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            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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      "providerMetadata": {
        "dateUpdated": "2025-10-10T16:09:55.227Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
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      "references": [
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          "name": "https://github.com/quic-go/quic-go/security/advisories/GHSA-47m2-4cr7-mhcw",
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      "title": "quic-go has Client Crash Due to Premature HANDSHAKE_DONE Frame"
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    "datePublished": "2025-10-10T16:09:55.227Z",
    "dateReserved": "2025-09-17T17:04:20.373Z",
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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