CVE-2020-36459Network attack vector

Memory corruption via unsound World Send implementation

Published Aug 8, 2021 · Updated Aug 4, 2024

Data race in dces 0.3.0 and earlier allows attackers to corrupt memory by moving a World with non-thread-safe stores across threads. World is marked Send without requiring EntityStore and ComponentStore implementations to be Send, so Rust permits their cross-thread transfer. Exploitation requires code to instantiate World with non-thread-safe stores and move it between threads, where concurrent access can corrupt memory or crash the consuming process.

CVSS severity8.1
High
EPSS probability1.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Data race in dces 0.3.0 and earlier allows attackers to corrupt memory by moving a World with non-thread-safe stores across threads. World is marked Send without requiring EntityStore and ComponentStore implementations to be Send, so Rust permits their cross-thread transfer. Exploitation requires code to instantiate World with non-thread-safe stores and move it between threads, where concurrent access can corrupt memory or crash the consuming process.

The record

CVE
CVE-2020-36459
Published
Aug 8, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-362, CWE-77
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 8, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8NIST National Vulnerability DatabaseAV:N/AC:M/Au:N/C:P/I:P/A:P
8.1NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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