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CVE-2009-2867

Status: ModifiedHigh (7.8)—
Severity7.8High · CVSS 2.0
Exploitation probability2.53 %higher than 85% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

Unspecified vulnerability in Cisco IOS 12.2XNA, 12.2XNB, 12.2XNC, 12.2XND, 12.4T, 12.4XZ, and 12.4YA, when Zone-Based Policy Firewall SIP Inspection is enabled, allows remote attackers to cause a denial of service (device reload) via a crafted SIP transit packet, aka Bug ID CSCsr18691.

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
2.53 %
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)

Cisco — IOS

CWEs

References

Show 10 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2009-2867",
  "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
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@cisco.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2009-09-28T19:30:01.420",
  "references": [
    {
      "url": "http://tools.cisco.com/security/center/viewAlert.x?alertId=18886",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080af8130.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",
      "source": "psirt@cisco.com"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7254",
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://tools.cisco.com/security/center/viewAlert.x?alertId=18886",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080af8130.shtml",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id?1022930",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2009/2759",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7254",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Unspecified vulnerability in Cisco IOS 12.2XNA, 12.2XNB, 12.2XNC, 12.2XND, 12.4T, 12.4XZ, and 12.4YA, when Zone-Based Policy Firewall SIP Inspection is enabled, allows remote attackers to cause a denial of service (device reload) via a crafted SIP transit packet, aka Bug ID CSCsr18691."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad sin especificar en Cisco IOS 1v2.2XNA, v12.2XNB, v12.2XNC, v12.2XND, v12.4T, v12.4XZ y v12.4YA. Cuando la función \"Policy Firewall SIP Inspection\" está activada, permite a usuarios remotos provocar una denegación de servicio (recarga del dispositivo) a través de un paquete de tránsito SIP modificado. También conocido como Bug ID CSCsr18691."
    }
  ],
  "lastModified": "2026-06-16T23:10:23.520",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.2xna:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DAD441B8-CC3C-4571-B095-C70B78BE80E9"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.2xnb:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "17AA0C3D-7C96-4D2E-91E5-232536245ABF"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.2xnc:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5D57ACB3-4ADC-4FBE-BA46-395F277B9997"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.2xnd:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E2916FA5-1FFF-48FB-A079-693AD3444CC1"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.4t:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "BEAD7398-D1B2-47FB-952D-8C3162D5A363"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.4xz:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4963A243-74FA-43AD-9645-C9FAD527A6E1"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.4ya:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "31C6EACA-35BE-4032-93DA-5F738AEE0F4A"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.4yb:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E67621EA-25D8-47C2-ADEA-512E38F2FFE3"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@cisco.com"
}