CVE-2006-5445

Status: ModifiedHigh (7.8)—
Unspecified vulnerability in the SIP channel driver (channels/chan_sip.c) in Asterisk 1.2.x before 1.2.13 and 1.4.x before 1.4.0-beta3 allows remote attackers to cause a denial of service (resource consumption) via unspecified vectors that result in the creation of "a real pvt structure" that uses more resources than necessary.
CVSS

Version: 2.0
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C
Base score: 7.8
Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 3.65%
Percentile among all scored CVEs: 89
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)

Digium — Asterisk
CWEs

NVD-CWE-Other
References

Raw JSON (NVD)

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{
  "id": "CVE-2006-5445",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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  },
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          "versions": [
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              "status": "affected",
              "version": "n/a"
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  "published": "2006-10-23T17:07:00.000",
  "references": [
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    {
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    {
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "NVD-CWE-Other"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Unspecified vulnerability in the SIP channel driver (channels/chan_sip.c) in Asterisk 1.2.x before 1.2.13 and 1.4.x before 1.4.0-beta3 allows remote attackers to cause a denial of service (resource consumption) via unspecified vectors that result in the creation of \"a real pvt structure\" that uses more resources than necessary."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad no especificada en el controlador de canal SIP  (channels/chan_sip.c) en ASterisk 1.2.x anteriores a 1.2.13 y 1.4.x aneriores a 1.4.0-beta3 permite a atacantes remotos provocar una denegación de servicio (agotamiento de recursos) a través de vectores no especificados que resultan en la creación de una \"estructura pvt real\" que usa más recursos de los necesarios."
    }
  ],
  "lastModified": "2026-06-16T22:31:12.650",
  "configurations": [
    {
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  "sourceIdentifier": "cve@mitre.org",
  "evaluatorSolution": "This vulnerability is addressed in the following product releases:\r\nDigium, Asterisk, 1.4.0-beta2\r\nDigium, Asterisk, 1.2.13"
}