How severe is CVE-2018-21000?

CVE-2018-21000 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-2018-21000 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-21000?

CVE-2018-21000 affects Safe-transmute Project Safe-transmute. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-21000?

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-2018-21000 published?

CVE-2018-21000 was published on 2019-08-26 and last updated on 2026-06-17.

CVE-2018-21000

CVE-2018-21000 is a critical-severity vulnerability in Safe-transmute Project Safe-transmute 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-119.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Safe-transmute Project Safe-transmute
Published: 2019-08-26
Last modified: 2026-06-17

Description

An issue was discovered in the safe-transmute crate before 0.10.1 for Rust. A constructor's arguments are in the wrong order, causing heap memory corruption.

Frequently asked questions

What is CVE-2018-21000?: An issue was discovered in the safe-transmute crate before 0.10.1 for Rust. A constructor's arguments are in the wrong order, causing heap memory corruption.
How severe is CVE-2018-21000?: CVE-2018-21000 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-2018-21000 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-21000?: CVE-2018-21000 affects Safe-transmute Project Safe-transmute. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-21000?: 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-2018-21000 published?: CVE-2018-21000 was published on 2019-08-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:safe-transmute_project:safe-transmute:*:*:*:*:*:*:*:*

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