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CVE-2025-29785

7.5 · HIGH

quic-go is an implementation of the QUIC protocol in Go.

Published Jun 2, 2025CWE-248EPSS 0.48%

Overview

CVE-2025-29785 is a high-severity vulnerability. It was published on June 2, 2025 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

quic-go is an implementation of the QUIC protocol in Go. The loss recovery logic for path probe packets that was added in the v0.50.0 release can be used to trigger a nil-pointer dereference by a malicious QUIC client. In order to do so, the attacker first sends valid QUIC packets from different remote addresses (thereby triggering the newly added path validation logic: the server sends path probe packets), and then sending ACKs for packets received from the server specifically crafted to trigger the nil-pointer dereference. v0.50.1 contains a patch that fixes the vulnerability. This release contains a test that generates random sequences of sent packets (both regular and path probe packets), that was used to verify that the patch actually covers all corner cases. No known workarounds are available.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/quic-go/quic-go/commit/b90058aba5f65f48e0e150c89bbaa21a72dda4deGitHubgithub.com/quic-go/quic-go/issues/4981GitHubgithub.com/quic-go/quic-go/security/advisories/GHSA-j972-j939-p2v3

How CyberStrike helps

Frequently asked questions

What is CVE-2025-29785?

CVE-2025-29785 is a high-severity vulnerability. It was published on June 2, 2025 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-29785?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-29785?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-29785?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-29785 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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