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CVE-2025-59530— quic-go has Client Crash Due to Premature HANDSHAKE_DONE Frame

Quick assessment

Affected
quic-go quic-go
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

quic-go是Lucas Clemente个人开发者的一种 QUIC 协议、RFC 9000协议在 Go 中的实现。 quic-go 0.49.0之前版本、0.54.1之前版本和0.55.0之前版本存在安全漏洞，该漏洞源于断言失败处理不当，可能导致拒绝服务攻击。

CVSS 7.5 · High EPSS 0.46% · P39

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2025-59530

Vulnerability Information
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Vulnerability Title
quic-go has Client Crash Due to Premature HANDSHAKE_DONE Frame
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可达断言
Source: CVE Program / CVE List V5
Vulnerability Title
quic-go 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
quic-go是Lucas Clemente个人开发者的一种 QUIC 协议、RFC 9000协议在 Go 中的实现。 quic-go 0.49.0之前版本、0.54.1之前版本和0.55.0之前版本存在安全漏洞，该漏洞源于断言失败处理不当，可能导致拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
quic-go quic-go < 0.49.1 -

II. Public POCs for CVE-2025-59530

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7431 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
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Exploit chain & mitigation
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III. Intelligence Information for CVE-2025-59530

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Patches & Fixes for CVE-2025-59530 (1)

Vendor Advisories for CVE-2025-59530 (1)

IV. Related Vulnerabilities

Same product: quic-go
Same vendor: quic-go
Same weakness: CWE-617

V. Comments for CVE-2025-59530

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