How severe is CVE-2021-45706?

CVE-2021-45706 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-2021-45706 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-45706?

CVE-2021-45706 affects Zeroize Derive Project Zeroize Derive. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-45706?

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-2021-45706 published?

CVE-2021-45706 was published on 2021-12-27 and last updated on 2026-06-17.

CVE-2021-45706

CVE-2021-45706 is a critical-severity vulnerability in Zeroize Derive Project Zeroize Derive 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-459.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-459
Affected product: Zeroize Derive Project Zeroize Derive
Published: 2021-12-27
Last modified: 2026-06-17

Description

An issue was discovered in the zeroize_derive crate before 1.1.1 for Rust. Dropped memory is not zeroed out for an enum.

Frequently asked questions

What is CVE-2021-45706?: An issue was discovered in the zeroize_derive crate before 1.1.1 for Rust. Dropped memory is not zeroed out for an enum.
How severe is CVE-2021-45706?: CVE-2021-45706 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-2021-45706 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-45706?: CVE-2021-45706 affects Zeroize Derive Project Zeroize Derive. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-45706?: 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-2021-45706 published?: CVE-2021-45706 was published on 2021-12-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:zeroize_derive_project:zeroize_derive:*:*:*:*:*:rust:*:*

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