CVE-2003-0020

Status: ModifiedMedium (5)—
Apache does not filter terminal escape sequences from its error logs, which could make it easier for attackers to insert those sequences into terminal emulators containing vulnerabilities related to escape sequences.
CVSS

Version: 2.0
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N
Base score: 5
Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 16%
Percentile among all scored CVEs: 97
Score date: 10/7/2026
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)

Apache — Http Server
CWEs

NVD-CWE-Other
References

Raw JSON (NVD)

Show
{
  "id": "CVE-2003-0020",
  "cveTags": [],
  "metrics": {
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        "cvssData": {
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          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
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          "product": "n/a",
          "versions": [
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              "status": "affected",
              "version": "n/a"
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  "published": "2003-03-18T05:00:00.000",
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  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Apache does not filter terminal escape sequences from its error logs, which could make it easier for attackers to insert those sequences into terminal emulators containing vulnerabilities related to escape sequences."
    },
    {
      "lang": "es",
      "value": "Apache no filtra secuencias de escape de terminales en sus archivos de registro de errores, lo que podría hacer más fácil para atacantes insertar estas secuencias en emuladores de terminal que tengan vulnerabilidades relacionadas con secuencias de escape."
    }
  ],
  "lastModified": "2026-06-16T22:01:21.340",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "matchCriteriaId": "44B59C66-C5B3-4682-BB43-A390B4093828",
              "versionEndExcluding": "1.3.31",
              "versionStartIncluding": "1.3.0"
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          "operator": "OR"
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  "vendorComments": [
    {
      "comment": "Fixed in Apache HTTP Server 2.0.49 and 1.3.31\nhttp://httpd.apache.org/security/vulnerabilities_20.html\nhttp://httpd.apache.org/security/vulnerabilities_13.html",
      "lastModified": "2008-07-02T00:00:00",
      "organization": "Apache"
    }
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  "sourceIdentifier": "cve@mitre.org"
}