7.5

CVE-2025-29785: quic-go Uncaught Exception

CVSS: 7.5v3.1HighDeferred
AliasesUBUNTU-CVE-2025-29785DEBIAN-CVE-2025-29785GHSA-j972-j939-p2v3
Published 02-06-2025Last modified 02-06-2025
Open JSON

Vulnerability summary

CVE-2025-29785 is a high (CVSS 7.5) Uncaught Exception vulnerability in quic-go. EPSS estimates a 0.48% chance of exploitation in the next 30 days, higher than 40.1% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.48%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2025:15225-1

Timeline

  1. 02-06-2025
    PublishedVulnerability first disclosed.
  2. 02-06-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.48%

Chance of exploitation in the next 30 days

Percentile

40%

Versus all other CVEs

30-day change

0.00 pp

From 0.48% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.48%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • golang-github-lucas-clemente-quic-goAll versions (No fix recorded) | < 0.50.1-1
Github.com/quic-go1 product
  • quic-go≥ 0.50.0, < 0.50.1
Quic-go1 product
Ubuntu1 product
  • golang-github-lucas-clemente-quic-goAll versions (No fix recorded)

4 vendors · 4 products

References

8 links