CVE-2007-0918

Status: ModifiedHigh (7.1)—
Severity7.1High · CVSS 2.0
Exploitation probability3.21 %higher than 88% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

The ATOMIC.TCP signature engine in the Intrusion Prevention System (IPS) feature for Cisco IOS 12.4XA, 12.3YA, 12.3T, and other trains allows remote attackers to cause a denial of service (IPS crash and traffic loss) via unspecified manipulations that are not properly handled by the regular expression feature, as demonstrated using the 3123.0 (Netbus Pro Traffic) signature.

CVSS

Base score
7.1
Version
2.0
Vector
AV:N/AC:M/Au:N/C:N/I:N/A:C

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
3.21 %
Percentile among all scored CVEs
88
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 18 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2007-0918",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.1,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2007-02-14T02:28:00.000",
  "references": [
    {
      "url": "http://osvdb.org/33053",
      "tags": [
        "Broken Link"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/24142",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.cisco.com/en/US/products/products_security_advisory09186a00807e0a5b.shtml",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.cisco.com/en/US/products/products_security_response09186a00807e0a5e.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/22549",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securitytracker.com/id?1017631",
      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2007/0597",
      "tags": [
        "Permissions Required",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/32474",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5832",
      "tags": [
        "Broken Link"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://osvdb.org/33053",
      "tags": [
        "Broken Link"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/24142",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.cisco.com/en/US/products/products_security_advisory09186a00807e0a5b.shtml",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.cisco.com/en/US/products/products_security_response09186a00807e0a5e.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/22549",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id?1017631",
      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2007/0597",
      "tags": [
        "Permissions Required",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/32474",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5832",
      "tags": [
        "Broken Link"
      ],
      "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 ATOMIC.TCP signature engine in the Intrusion Prevention System (IPS) feature for Cisco IOS 12.4XA, 12.3YA, 12.3T, and other trains allows remote attackers to cause a denial of service (IPS crash and traffic loss) via unspecified manipulations that are not properly handled by the regular expression feature, as demonstrated using the 3123.0 (Netbus Pro Traffic) signature."
    },
    {
      "lang": "es",
      "value": "El motor de firmas ATOMIC.TCP en la función Intrusion Prevention System (IPS) para Cisco IOS versiones 12.4XA, 12.3YA, 12.3T y otros trenes permite a los atacantes remotos causar una denegación de servicio (bloqueo de IPS y pérdida de tráfico) por medio de manipulaciones no especificadas que no se manejan apropiadamente con la función regular expression, como se demuestra con la firma 3123.0 (Netbus Pro Traffic)."
    }
  ],
  "lastModified": "2026-06-16T22:36:33.813",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.3t:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C0C3B413-76F7-413B-A51F-29834F9DE722"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.3xq:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "86B9E611-3F06-424C-96EF-EE4997C70AB9"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.3xr:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E0A5760A-9FFE-4941-B2BD-7DD54B1E1B37"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.3xs:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "98FE195E-084B-4F4C-800D-850165DED48C"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.3xw:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E618BF54-56DC-40FC-A515-3BFB4366F823"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.3xx:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A1976E53-85A6-494F-B8AC-847E7988850C"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.3xy:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D90B78E1-3FC7-4CF6-B0BA-1D4CA0FAB57E"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.3ya:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "320C5597-68BE-4899-9EBB-9B4DEE8EA7DB"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.3yd:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "520304A4-EB15-42A8-A402-8251A4D2076D"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.3yg:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CA88C064-898F-4C0D-A266-D7B3509C28A2"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.3yh:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "139B1182-61A3-4F3D-9E29-758F27917646"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.3yi:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0CC3706F-B00A-405E-917E-7FD5217E0501"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.3yj:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1B46199E-0DF1-4B3F-A29E-1A2FC016F0F5"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.3yk:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1DF4D0E3-8015-4D6F-8364-B6EEAAE67971"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.3ym:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2595DCBA-E6F2-4551-A804-4DBB137F076B"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.3yq:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CD6DF12B-2A20-4AC5-8EC5-729008D87736"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.3ys:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6BF9D6B6-E51F-44FF-97E5-15E0C4E9C3D7"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.3yt:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A25C42FA-37F4-4B7F-AFCA-D7F081F58CF4"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.3yx:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2958873B-A0AB-4EAF-A5CF-8423739FAB07"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.3yz:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1938D118-C07F-4BEC-8030-947F099BFCB8"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.4:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9D4D8C72-E7BB-40BF-9AE5-622794D63E09"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.4mr:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C7414D32-88A1-416E-A717-3F47B6D1BE74"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.4t:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "BEAD7398-D1B2-47FB-952D-8C3162D5A363"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.4xa:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "99235FFB-4439-40B2-ADBD-B08E5DBBCCB9"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.4xb:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C1797E4E-E15C-4148-9B3D-4FF6D1D815AF"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}