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CVE-2021-45695

Status: ModifiedCritical (9.8)—
Severity9.8Critical · CVSS 3.1
Exploitation probability1.70 %higher than 77% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

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.

CVSS

Base score
9.8
Version
3.1
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
1.70 %
Percentile among all scored CVEs
77
Score date
10/24/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Mopa Project — Mopa

CWEs

References

Show 4 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2021-45695",
  "cveTags": [],
  "metrics": {
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        "source": "nvd@nist.gov",
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
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        "obtainUserPrivilege": false,
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  "published": "2021-12-27T00:15:09.460",
  "references": [
    {
      "url": "https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/mopa/RUSTSEC-2021-0095.md",
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
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  "descriptions": [
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      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "Se ha detectado un problema en la crate mopa versiones hasta 01-06-2021 para Rust. Se basa incorrectamente en la disposición de la memoria de Trait, conllevando posiblemente a futuras ocurrencias de ejecución de código arbitrario o omisión de ASLR"
    }
  ],
  "lastModified": "2026-06-17T04:13:57.867",
  "configurations": [
    {
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        {
          "negate": false,
          "cpeMatch": [
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              "versionEndIncluding": "0.2.2"
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}