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CVE-2011-1625

Status: ModifiedMedium (5.4)—
Severity5.4Medium · CVSS 2.0
Exploitation probability0.73 %higher than 54% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

Cisco IOS 12.2, 12.3, 12.4, 15.0, and 15.1, when the data-link switching (DLSw) feature is configured, allows remote attackers to cause a denial of service (device crash) by sending a sequence of malformed packets and leveraging a "narrow timing window," aka Bug ID CSCtf74999, a different vulnerability than CVE-2007-0199, CVE-2008-1152, and CVE-2009-0629.

CVSS

Base score
5.4
Version
2.0
Vector
AV:N/AC:H/Au:N/C:N/I:N/A:C

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
0.73 %
Percentile among all scored CVEs
54
Score date
10/21/2026

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 2 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2011-1625",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5.4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:H/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "HIGH",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 4.9,
        "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": "2011-08-18T18:55:01.443",
  "references": [
    {
      "url": "http://www.cisco.com/en/US/docs/cable/cmts/release/notes/12_2sc/uBR7200/122_33_SCF/caveats.html",
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://www.cisco.com/en/US/docs/cable/cmts/release/notes/12_2sc/uBR7200/122_33_SCF/caveats.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-362"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Cisco IOS 12.2, 12.3, 12.4, 15.0, and 15.1, when the data-link switching (DLSw) feature is configured, allows remote attackers to cause a denial of service (device crash) by sending a sequence of malformed packets and leveraging a \"narrow timing window,\" aka Bug ID CSCtf74999, a different vulnerability than CVE-2007-0199, CVE-2008-1152, and CVE-2009-0629."
    },
    {
      "lang": "es",
      "value": "Cisco IOS v12.2, v12.3, v12.4, v15.0 y v15.1, cuando el enlace de datos de conmutación (DLSw) está configurado, permite a atacantes remotos causar una denegación de servicio (caída del dispositivo) mediante el envío de una secuencia de paquetes mal formados y el aprovechamiento de una \"ventana de tiempo limitada\". Vulnerabilidad también conocida como Bug ID CSCtf74999, se trata de una vulnerabilidad diferente a CVE-2007-0199, CVE-2008-1152, y CVE-2009-0629."
    }
  ],
  "lastModified": "2026-06-16T23:29:44.127",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E4BC49F2-3DCB-45F0-9030-13F6415EE178"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0668C45B-9D25-424B-B876-C1721BFFE5DA"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.4:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9D4D8C72-E7BB-40BF-9AE5-622794D63E09"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:15.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CF87CC9A-1AF5-4DB4-ACE5-DB938D3B2F84"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:15.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "EB41294E-F3DF-4F1E-A4C8-E90B21A88836"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@cisco.com"
}