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CVE-2020-35922

18
FAUCET Score

CVE-2020-35922 is a vulnerability in the Rust mio crate prior to version 0.7.6, stemming from incorrect assumptions about the memory representation of std::net::SocketAddr, affecting mio_project mio. With a CVSS score of 5.5 (Medium), this local attack vector could lead to high availability impact, though it requires low attack complexity and user privileges. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.7.0, < 0.7.6CPE matchmatch criteria
cpe:2.3:a:mio_project:mio:*:*:*:*:*:rust:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
31.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 87th percentile among its peer group of 15,937 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 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 (1)

rustpatch availablevia ghsa
Product: mioFixed in: 0.7.6

Vendor Advisories (1)

rustGHSA-pf3p-x6qj-6j7qmedium

mio invalidly assumes the memory layout of std::net::SocketAddr

Aug 25, 2021

References

rustsec.org / advisories/RUSTSEC-2020-0081.html
ExploitThird Party Advisory