Description
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.
Published: 2025-10-10
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-47m2-4cr7-mhcw quic-go: Panic occurs when queuing undecryptable packets after handshake completion
History

Tue, 21 Oct 2025 13:15:00 +0000

Type Values Removed Values Added
First Time appeared Quic-go Project
Quic-go Project quic-go
Vendors & Products Quic-go Project
Quic-go Project quic-go

Thu, 16 Oct 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Fri, 10 Oct 2025 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 10 Oct 2025 16:15:00 +0000

Type Values Removed Values Added
Description 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.
Title quic-go has Client Crash Due to Premature HANDSHAKE_DONE Frame
Weaknesses CWE-617
CWE-755
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Subscriptions

Quic-go Project Quic-go
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-10-10T16:31:47.457Z

Reserved: 2025-09-17T17:04:20.373Z

Link: CVE-2025-59530

cve-icon Vulnrichment

Updated: 2025-10-10T16:31:41.920Z

cve-icon NVD

Status : Deferred

Published: 2025-10-10T16:15:52.387

Modified: 2026-04-15T00:35:42.020

Link: CVE-2025-59530

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-10-10T16:09:55Z

Links: CVE-2025-59530 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-10-21T13:14:10Z

Weaknesses