Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2023-42805

19
FAUCET Score

CVE-2023-42805 describes a denial-of-service vulnerability in the quinn-proto library, affecting versions prior to 0.9.5 and 0.10.5. This flaw allows an unauthenticated attacker to trigger a panic by sending unknown QUIC frames, leading to a high-severity impact on availability. While no active exploitation or public exploit code is currently observed, the vulnerability has a CVSS score of 7.5, indicating a significant risk. Community discussion and media coverage are minimal, suggesting low public awareness at this time.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.9.5CPE matchmatch criteria
cpe:2.3:a:quinn_project:quinn:*:*:*:*:*:rust:*:*
>= 0.10.0, < 0.10.5CPE matchmatch criteria
cpe:2.3:a:quinn_project:quinn:*:*:*:*:*:rust:*:*

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
0.76%
Probability of exploitation in next 30 days
EPSS Percentile
51.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0076 is in the 27th percentile among its peer group of 51,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

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
rustpatch availablevia ghsa
Product: quinn-protoFixed in: 0.9.5

Vendor Advisories (1)

rustGHSA-q8wc-j5m9-27w3high

Denial of Service issue in quinn-proto

Sep 21, 2023

References

github.com / quinn-rs/quinn/pull/1667
Issue TrackingPatch
github.com / quinn-rs/quinn/pull/1668
Issue TrackingPatch
github.com / quinn-rs/quinn/pull/1669
Issue Tracking
github.com / quinn-rs/quinn/security/advisories/GHSA-q8wc-j5m9-27w3
Vendor Advisory