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CVE-2021-45710

27
FAUCET Score

CVE-2021-45710 describes a data race and memory corruption vulnerability within the Tokio Rust crate, affecting versions before 1.8.4 and 1.9.x through 1.13.x before 1.13.1, specifically when a oneshot channel is closed under certain conditions. This vulnerability carries a high CVSS score of 8.1, indicating a critical risk due to its network-based attack vector, high impact on confidentiality, integrity, and availability, despite high attack complexity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.1.14, < 1.8.4CPE matchmatch criteria
cpe:2.3:a:tokio:tokio:*:*:*:*:*:rust:*:*
>= 1.9.0, < 1.13.1CPE matchmatch criteria
cpe:2.3:a:tokio:tokio:*:*:*:*:*:rust:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.16%
Probability of exploitation in next 30 days
EPSS Percentile
63.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0116 is in the 26th percentile among its peer group of 8,918 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 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: tokioFixed in: 1.13.1
rustpatch availablevia ghsa
Product: tokioFixed in: 1.8.4

Vendor Advisories (2)

rustGHSA-fg7r-2g4j-5cgrhigh

Race Condition in tokio

Jan 6, 2022
redhatCVE-2021-45710Low

tokio: Race leads to panic in oneshot::Sender::send()

Dec 27, 2021

References

raw.githubusercontent.com / rustsec/advisory-db/main/crates/tokio/RUSTSEC-2021-0124.md
Third Party Advisory
rustsec.org / advisories/RUSTSEC-2021-0124.html
PatchThird Party Advisory