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CVE-2023-46239

22
FAUCET Score

CVE-2023-46239 is a high-severity denial-of-service vulnerability affecting quic-go versions 0.37.0 through 0.37.2. An unauthenticated remote attacker can trigger a nil pointer dereference by sending a specially crafted QUIC ACK frame during the handshake, causing the affected node to crash. The vulnerability has a CVSS score of 7.5, indicating a high impact on availability with low attack complexity. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion regarding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.37.0, < 0.37.3CPE matchmatch criteria
cpe:2.3:a:quic-go_project:quic-go:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.77%
Probability of exploitation in next 30 days
EPSS Percentile
51.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0076 is in the 27th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
gopatch availablevia ghsa
Product: github.com/quic-go/quic-goFixed in: 0.37.3

Vendor Advisories (1)

goGHSA-3q6m-v84f-6p9hhigh

quic-go vulnerable to pointer dereference that can lead to panic

Oct 30, 2023

References

github.com / quic-go/quic-go/commit/b6a4725b60f1fe04e8f1ddcc3114e290fcea1617
Patch
github.com / quic-go/quic-go/releases/tag/v0.37.3
Release Notes
github.com / quic-go/quic-go/security/advisories/GHSA-3q6m-v84f-6p9h
PatchVendor Advisory