How severe is CVE-2020-36464?

CVE-2020-36464 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-36464 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-36464?

CVE-2020-36464 affects Heapless Project Heapless. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-36464?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-36464 published?

CVE-2020-36464 was published on 2021-08-08 and last updated on 2026-06-17.

CVE-2020-36464

CVE-2020-36464 is a high-severity vulnerability in Heapless Project Heapless with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-416.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-416
Affected product: Heapless Project Heapless
Published: 2021-08-08
Last modified: 2026-06-17

Description

An issue was discovered in the heapless crate before 0.6.1 for Rust. The IntoIter Clone implementation clones an entire underlying Vec without considering whether it has already been partially consumed.

Frequently asked questions

What is CVE-2020-36464?: An issue was discovered in the heapless crate before 0.6.1 for Rust. The IntoIter Clone implementation clones an entire underlying Vec without considering whether it has already been partially consumed.
How severe is CVE-2020-36464?: CVE-2020-36464 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-36464 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-36464?: CVE-2020-36464 affects Heapless Project Heapless. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-36464?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-36464 published?: CVE-2020-36464 was published on 2021-08-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:heapless_project:heapless:*:*:*:*:*:rust:*:*

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