CVE-2009-2870

Status: ModifiedHigh (7.8)—
Severity7.8High · CVSS 2.0
Exploitation probability2.52 %higher than 85% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

Unspecified vulnerability in Cisco IOS 12.2 through 12.4, when the Cisco Unified Border Element feature is enabled, allows remote attackers to cause a denial of service (device reload) via crafted SIP messages, aka Bug ID CSCsx25880.

CVSS

Base score
7.8
Version
2.0
Vector
AV:N/AC:L/Au:N/C:N/I:N/A:C

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
2.52 %
Percentile among all scored CVEs
85
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)

CWEs

References

Show 8 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2009-2870",
  "cveTags": [],
  "metrics": {
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        "type": "Primary",
        "source": "nvd@nist.gov",
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          "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
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@cisco.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2009-09-28T19:30:01.483",
  "references": [
    {
      "url": "http://tools.cisco.com/security/center/viewAlert.x?alertId=18891",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080af811b.shtml",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://www.securitytracker.com/id?1022930",
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2009/2759",
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    },
    {
      "url": "http://tools.cisco.com/security/center/viewAlert.x?alertId=18891",
      "tags": [
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    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2009/2759",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Unspecified vulnerability in Cisco IOS 12.2 through 12.4, when the Cisco Unified Border Element feature is enabled, allows remote attackers to cause a denial of service (device reload) via crafted SIP messages, aka Bug ID CSCsx25880."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad sin especificar en Cisco IOS v12.2 hasta la v12.4. Cuando la función \"Cisco Unified Border Element\" esta activada, permite a usuarios remotos provocar una denegación de servicio (recarga del dispositivo) a través de mensajes SIP modificados. También conocido como Bug ID CSCsx25880."
    }
  ],
  "lastModified": "2026-06-16T23:10:23.840",
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          "operator": "OR"
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  "sourceIdentifier": "psirt@cisco.com"
}