Security readout for executives and security teams
Plain-English summary
CVE-2020-36472 affects the Rust max7301 crate before 0.2.0. The issue concerns unsafe thread-sharing behavior in library types, which could undermine Rust’s normal memory-safety guarantees when affected code is used concurrently. Public sources do not identify real-world exploitation, business impact, or affected downstream products.
Executive priority
Treat this as a targeted dependency hygiene issue unless max7301 appears in safety-critical or exposed operational systems. Prioritize inventory and upgrade validation over emergency response, because public sources do not show exploitation or broad product impact.
Technical view
ImmediateIO and TransactionalIO implement Sync for all contained Expander<EI> types. The advisory indicates this blanket Sync implementation was incorrect for max7301 versions before 0.2.0, creating potential unsoundness when non-thread-safe internals are shared across threads.
Likely exposure
Exposure is limited to software that depends on the Rust max7301 crate before version 0.2.0. The sources do not list CPEs, vendors, deployed products, or vulnerable applications. Embedded or hardware-control projects using this crate should be reviewed first.
Exploitation context
The source bundle shows no KEV listing and provides no cited evidence of active exploitation. The issue is a Rust safety and concurrency flaw, not a documented remotely exploitable service vulnerability. Practical risk depends on how affected code is used.
Researcher notes
Evidence is sparse: no CVSS, CWE, CPEs, affected vendors, or exploit reports are supplied. The key technical signal is Rust unsoundness from an overly broad Sync implementation in max7301 before 0.2.0. Avoid assuming impact beyond projects that actually use the crate.
Mitigation direction
- Identify all projects using the max7301 Rust crate.
- Upgrade max7301 to version 0.2.0 or later where feasible.
- Review vendor or RustSec guidance before accepting residual risk.
- Rebuild and retest applications after dependency changes.
Validation and detection
- Check Cargo.lock and dependency manifests for max7301 versions below 0.2.0.
- Run dependency advisory scanning against RustSec data.
- Review concurrent use of ImmediateIO, TransactionalIO, and Expander types.
- Confirm fixed dependency versions are present in release artifacts.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2020-36472 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://rustsec.org/advisories/RUSTSEC-2020-0152.htmlCVE reference · x_refsource_MISC
- https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/max7301/RUSTSEC-2020-0152.mdCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.