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CVE-2020-35920

18
FAUCET Score

CVE-2020-35920 is a medium-severity vulnerability affecting the socket2 crate for Rust, specifically versions prior to 0.3.16. It stems from incorrect assumptions about the memory representation of std::net::SocketAddr, potentially leading to a denial of service. The vulnerability has a CVSS score of 5.5, indicating a local attack vector with low complexity, requiring low privileges, and resulting in high availability impact. There is currently no evidence of active exploitation, no public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.3.16CPE matchmatch criteria
cpe:2.3:a:rust-lang:socket2:*:*:*:*:*: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
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
32.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 87th percentile among its peer group of 15,938 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 (2)

rustpatch availablevia ghsa
Product: socket2Fixed in: 0.3.16
rustpatch availablevia ghsa
Product: net2Fixed in: 0.2.36

Vendor Advisories (1)

rustGHSA-458v-4hrf-g3m4medium

socket2 invalidly assumes the memory layout of std::net::SocketAddr

Aug 25, 2021

References

rustsec.org / advisories/RUSTSEC-2020-0079.html
ExploitThird Party Advisory