How severe is CVE-2021-45695?

CVE-2021-45695 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-2021-45695 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-45695?

CVE-2021-45695 affects Mopa Project Mopa. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-45695?

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-2021-45695 published?

CVE-2021-45695 was published on 2021-12-27 and last updated on 2026-06-17.

CVE-2021-45695

CVE-2021-45695 is a critical-severity vulnerability in Mopa Project Mopa 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: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Mopa Project Mopa
Published: 2021-12-27
Last modified: 2026-06-17

Description

An issue was discovered in the mopa crate through 2021-06-01 for Rust. It incorrectly relies on Trait memory layout, possibly leading to future occurrences of arbitrary code execution or ASLR bypass.

Frequently asked questions

What is CVE-2021-45695?: An issue was discovered in the mopa crate through 2021-06-01 for Rust. It incorrectly relies on Trait memory layout, possibly leading to future occurrences of arbitrary code execution or ASLR bypass.
How severe is CVE-2021-45695?: CVE-2021-45695 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-2021-45695 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-45695?: CVE-2021-45695 affects Mopa Project Mopa. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-45695?: 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-2021-45695 published?: CVE-2021-45695 was published on 2021-12-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mopa_project:mopa:*:*:*:*:*:rust:*:*