How severe is CVE-2020-35860?

CVE-2020-35860 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-35860 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-35860?

CVE-2020-35860 affects Cbox Project Cbox. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-35860?

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

When was CVE-2020-35860 published?

CVE-2020-35860 was published on 2020-12-31 and last updated on 2026-06-17.

CVE-2020-35860

CVE-2020-35860 is a critical-severity vulnerability in Cbox Project Cbox with a CVSS 3.x base score of 9.8. 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-476.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Cbox Project Cbox
Published: 2020-12-31
Last modified: 2026-06-17

Description

An issue was discovered in the cbox crate through 2020-03-19 for Rust. The CBox API allows dereferencing raw pointers without a requirement for unsafe code.

Frequently asked questions

What is CVE-2020-35860?: An issue was discovered in the cbox crate through 2020-03-19 for Rust. The CBox API allows dereferencing raw pointers without a requirement for unsafe code.
How severe is CVE-2020-35860?: CVE-2020-35860 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-35860 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-35860?: CVE-2020-35860 affects Cbox Project Cbox. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-35860?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-35860 published?: CVE-2020-35860 was published on 2020-12-31 and last updated on 2026-06-17.

References

https://rustsec.org/advisories/RUSTSEC-2020-0005.html

Affected products (1)

cpe:2.3:a:cbox_project:cbox:*:*:*:*:*:rust:*:*

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