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CVE-2009-2862

Status: ModifiedMedium (4.3)—
Severity4.3Medium · CVSS 2.0
Exploitation probability2.25 %higher than 83% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

The Object Groups for Access Control Lists (ACLs) feature in Cisco IOS 12.2XNB, 12.2XNC, 12.2XND, 12.4MD, 12.4T, 12.4XZ, and 12.4YA allows remote attackers to bypass intended access restrictions via crafted requests, aka Bug IDs CSCsx07114, CSCsu70214, CSCsw47076, CSCsv48603, CSCsy54122, and CSCsu50252.

CVSS

Base score
4.3
Version
2.0
Vector
AV:N/AC:M/Au:N/C:P/I:N/A:N

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
2.25 %
Percentile among all scored CVEs
83
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 12 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2009-2862",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "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": "2009-09-28T19:30:01.217",
  "references": [
    {
      "url": "http://osvdb.org/58338",
      "tags": [
        "Broken Link"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://tools.cisco.com/security/center/viewAlert.x?alertId=18876",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080af8119.shtml",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/36495",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://www.securitytracker.com/id?1022933",
      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2009/2759",
      "tags": [
        "Permissions Required"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://osvdb.org/58338",
      "tags": [
        "Broken Link"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://tools.cisco.com/security/center/viewAlert.x?alertId=18876",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080af8119.shtml",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/36495",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id?1022933",
      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2009/2759",
      "tags": [
        "Permissions Required"
      ],
      "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": "The Object Groups for Access Control Lists (ACLs) feature in Cisco IOS 12.2XNB, 12.2XNC, 12.2XND, 12.4MD, 12.4T, 12.4XZ, and 12.4YA allows remote attackers to bypass intended access restrictions via crafted requests, aka Bug IDs CSCsx07114, CSCsu70214, CSCsw47076, CSCsv48603, CSCsy54122, and CSCsu50252."
    },
    {
      "lang": "es",
      "value": "Los \"Object Groups\" (grupos de objetos) para la funcionalidad de listas de control de acceso (ACLs) en Cisco IOS v12.2XNB, v12.2XNC, v12.2XND, v12.4MD, v12.4T, v12.4XZ y  v12.4YA permiten a los usuarios remotos evitar las restricciones establecidas a través de peticiones modificadas. También conocido como IDs CSCsx07114, CSCsu70214, CSCsw47076, CSCsv48603, CSCsy54122 y CSCsu50252."
    }
  ],
  "lastModified": "2026-06-16T23:10:22.937",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "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:12.4md:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A2222EED-6CB2-4D18-8AF5-FAE55BC6213F"
            },
            {
              "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"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@cisco.com"
}