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CVE-2018-20992

21
FAUCET Score

CVE-2018-20992 is a medium-severity vulnerability affecting the claxon crate for Rust, specifically versions prior to 0.4.1. It involves the mishandling of decode buffer sizes, which can lead to the exposure of uninitialized memory. The vulnerability has a CVSS score of 6.5, indicating a high potential for confidentiality impact if exploited, though it requires user interaction and has low attack complexity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.2.0, <= 0.3.1CPE matchmatch criteria
cpe:2.3:a:claxon_project:claxon:*:*:*:*:*:*:*:*
0.4.0CPE matchmatch criteria
cpe:2.3:a:claxon_project:claxon:0.4.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.37%
Probability of exploitation in next 30 days
EPSS Percentile
69.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0137 is in the 81st percentile among its peer group of 26,220 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 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)

rustpatch availablevia ghsa
Product: claxonFixed in: 0.4.1
rustpatch availablevia ghsa
Product: claxonFixed in: 0.3.2

Vendor Advisories (1)

rustGHSA-8c6g-4xc5-w96cmedium

Uninitialized memory exposure in claxon

Aug 25, 2021

References

rustsec.org / advisories/RUSTSEC-2018-0004.html
PatchThird Party Advisory