How severe is CVE-2021-45697?

CVE-2021-45697 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-2021-45697 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-45697?

CVE-2021-45697 affects Nervos Molecule. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-45697?

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-2021-45697 published?

CVE-2021-45697 was published on 2021-12-27 and last updated on 2026-06-17.

CVE-2021-45697

CVE-2021-45697 is a critical-severity vulnerability in Nervos Molecule 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.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Nervos Molecule
Published: 2021-12-27
Last modified: 2026-06-17

Description

An issue was discovered in the molecule crate before 0.7.2 for Rust. A FixVec partial read has an incorrect result.

Frequently asked questions

What is CVE-2021-45697?: An issue was discovered in the molecule crate before 0.7.2 for Rust. A FixVec partial read has an incorrect result.
How severe is CVE-2021-45697?: CVE-2021-45697 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-2021-45697 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-45697?: CVE-2021-45697 affects Nervos Molecule. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-45697?: 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-2021-45697 published?: CVE-2021-45697 was published on 2021-12-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:nervos:molecule:*:*:*:*:*:rust:*:*