CVE-2025-59530
quic-go has Client Crash Due to Premature HANDSHAKE_DONE Frame
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.
INFO
Published Date :
Oct. 10, 2025, 4:15 p.m.
Last Modified :
Oct. 19, 2026, 4:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update quic-go to version 0.49.0 or later.
- Update quic-go to version 0.54.1 or later.
- Update quic-go to version 0.55.0 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-59530.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-59530 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-59530
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-59530 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-59530 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 19, 2026
Action Type Old Value New Value Added Translation Title: quic-go, Description: quic-go es una implementación del protocolo QUIC en Go. En versiones anteriores a la 0.49.0, 0.54.1 y 0.55.0, un servidor malintencionado o con comportamiento anómalo puede causar un ataque de denegación de servicio (DoS) en el cliente quic-go al desencadenar un fallo de aserción, lo que lleva a un bloqueo del proceso. Esto no requiere autenticación y puede ser explotado durante la fase de handshake. Esto se observó en la práctica con ciertas implementaciones de servidor. quic-go necesita poder manejar implementaciones de servidor con comportamiento anómalo, incluyendo aquellas que envían prematuramente un frame HANDSHAKE_DONE. Las versiones 0.49.0, 0.54.1 y 0.55.0 descartan las claves iniciales al recibir un frame HANDSHAKE_DONE, manejando así correctamente los frames HANDSHAKE_DONE prematuros. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'quic-go', 'product': 'quic-go', 'versions': [{'status': 'affected', 'version': '< 0.49.1'}, {'status': 'affected', 'version': '>= 0.5.0, < 0.54.1'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2025-59530', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2025-10-10T16:31:32.909241Z'} -
New CVE Received by [email protected]
Oct. 10, 2025
Action Type Old Value New Value 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-617 Added CWE CWE-755 Added Reference https://github.com/quic-go/quic-go/blob/v0.55.0/connection.go#L2682-L2685 Added Reference https://github.com/quic-go/quic-go/pull/5354 Added Reference https://github.com/quic-go/quic-go/security/advisories/GHSA-47m2-4cr7-mhcw