CVE-2020-36472Network attack vector

Memory corruption via unsound Sync implementations

Published Aug 8, 2021 · Updated Aug 4, 2024

Data race in the max7301 crate before 0.2.0 allows attackers to trigger memory-safety violations through concurrent use. ImmediateIO and TransactionalIO unconditionally implement Sync for a contained Expander, allowing a non-Send interface to cross thread boundaries and be mutably accessed concurrently. Exploitation requires a consuming program to share either wrapper across threads with a non-Send interface; resulting races can corrupt memory or interrupt the process.

CVSS severity5.9
Medium
EPSS probability0.98%
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 the max7301 crate before 0.2.0 allows attackers to trigger memory-safety violations through concurrent use. ImmediateIO and TransactionalIO unconditionally implement Sync for a contained Expander, allowing a non-Send interface to cross thread boundaries and be mutably accessed concurrently. Exploitation requires a consuming program to share either wrapper across threads with a non-Send interface; resulting races can corrupt memory or interrupt the process.

The record

CVE
CVE-2020-36472
Published
Aug 8, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-362
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

4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:N/A:P
5.9NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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')

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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