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CVE-2003-0464

Status: ModifiedMedium (4.6)—
Severity4.6Medium · CVSS 2.0
Exploitation probability0.38 %higher than 31% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

The RPC code in Linux kernel 2.4 sets the reuse flag when sockets are created, which could allow local users to bind to UDP ports that are used by privileged services such as nfsd.

CVSS

Base score
4.6
Version
2.0
Vector
AV:L/AC:L/Au:N/C:P/I:P/A:P

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
0.38 %
Percentile among all scored CVEs
31
Score date
10/20/2026

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)

Redhat — Linux

CWEs

References

Show 4 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2003-0464",
  "cveTags": [],
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          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
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        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
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        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
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  },
  "affected": [
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      "affectedData": [
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              "version": "n/a"
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  "published": "2003-08-27T04:00:00.000",
  "references": [
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2003-238.html",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A311",
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    {
      "url": "http://www.redhat.com/support/errata/RHSA-2003-238.html",
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    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
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      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "NVD-CWE-Other"
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  "descriptions": [
    {
      "lang": "en",
      "value": "The RPC code in Linux kernel 2.4 sets the reuse flag when sockets are created, which could allow local users to bind to UDP ports that are used by privileged services such as nfsd."
    },
    {
      "lang": "es",
      "value": "El código RPC en el kernel 2.4 de Linux establece la bandera de reusar cuando se crean sockets, lo que podría permitir a usuarios locales atar puertos UDP usados por servicios privilegiados como nfsd."
    }
  ],
  "lastModified": "2026-06-16T22:02:15.047",
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