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CVE-2024-38531

Status: DeferredLow (3.6)—
Severity3.6Low · CVSS 3.1
Exploitation probability0.14 %higher than 3% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

Nix is a package manager for Linux and other Unix systems that makes package management reliable and reproducible. A build process has access to and can change the permissions of the build directory. After creating a setuid binary in a globally accessible location, a malicious local user can assume the permissions of a Nix daemon worker and hijack all future builds. This issue was patched in version(s) 2.23.1, 2.22.2, 2.21.3, 2.20.7, 2.19.5 and 2.18.4.

CVSS

Base score
3.6
Version
3.1
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
0.14 %
Percentile among all scored CVEs
3
Score date
10/22/2026

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)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

NIX — NIXAI

CWEs

References

Show 4 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2024-38531",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-38531",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-07-05T15:26:22.607904Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 3.6,
          "attackVector": "LOCAL",
          "baseSeverity": "LOW",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "LOW",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 2.5,
        "exploitabilityScore": 1
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "NixOS",
          "product": "nix",
          "versions": [
            {
              "status": "affected",
              "version": ">= 2.23.0, < 2.23.1"
            },
            {
              "status": "affected",
              "version": ">= 2.22.0, < 2.22.2"
            },
            {
              "status": "affected",
              "version": ">= 2.21.0, < 2.21.3"
            },
            {
              "status": "affected",
              "version": ">= 2.20.0, < 2.20.7"
            },
            {
              "status": "affected",
              "version": ">= 2.19.0, < 2.19.5"
            },
            {
              "status": "affected",
              "version": ">= 2.18.0, < 2.18.4"
            }
          ]
        }
      ]
    }
  ],
  "published": "2024-06-28T14:15:03.293",
  "references": [
    {
      "url": "https://github.com/NixOS/nix/pull/10501",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/NixOS/nix/security/advisories/GHSA-q82p-44mg-mgh5",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/NixOS/nix/pull/10501",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/NixOS/nix/security/advisories/GHSA-q82p-44mg-mgh5",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-278"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Nix is a package manager for Linux and other Unix systems that makes package management reliable and reproducible. A build process has access to and can change the permissions of the build directory. After creating a setuid binary in a globally accessible location, a malicious local user can assume the permissions of a Nix daemon worker and hijack all future builds. This issue was patched in version(s) 2.23.1, 2.22.2, 2.21.3, 2.20.7, 2.19.5 and 2.18.4."
    },
    {
      "lang": "es",
      "value": "Nix es un administrador de paquetes para Linux y otros sistemas Unix que hace que la administración de paquetes sea confiable y reproducible. Un proceso de compilación tiene acceso y puede cambiar los permisos del directorio de compilación. Después de crear un binario setuid en una ubicación accesible globalmente, un usuario local malicioso puede asumir los permisos de un daemon trabajador de Nix y secuestrar todas las compilaciones futuras. Este problema se solucionó en las versiones 2.23.1, 2.22.2, 2.21.3, 2.20.7, 2.19.5 y 2.18.4."
    }
  ],
  "lastModified": "2026-06-17T07:40:28.927",
  "sourceIdentifier": "security-advisories@github.com"
}