CVE-2020-36209

Data race via incorrect Sync bound

Published Jan 22, 2021 · Updated Aug 4, 2024

A data race in late-static before 0.4.0 for Rust allows local users to trigger unsynchronized access via LateStatic's incorrect Sync implementation. The crate marks LateStatic as Sync when T is only Send, permitting concurrent access to non-Sync types such as Cell. Exploitation requires low-privilege local code using the crate and can cause memory corruption or other undefined behavior.

CVSS severity7.0
High
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A data race in late-static before 0.4.0 for Rust allows local users to trigger unsynchronized access via LateStatic's incorrect Sync implementation. The crate marks LateStatic as Sync when T is only Send, permitting concurrent access to non-Sync types such as Cell. Exploitation requires low-privilege local code using the crate and can cause memory corruption or other undefined behavior.

The record

CVE
CVE-2020-36209
Published
Jan 22, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 22, 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 vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.0OSV/RustSecCVSS:3.1/AV:L/AC:H/PR:L/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.

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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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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