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FKIE_CVE-2026-45751

Vulnerability from fkie_nvd - Published: 2026-09-10 21:17 - Updated: 2026-09-11 16:17
Severity
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, Suricata's inspection-buffer helper could leave an inspection pointer referencing freed memory after a chained transform caused the backing buffer to be reallocated. The issue is reached during a specific network traffic processing, and requires a specific but not malicious rule. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, avoid rules that chain `dotprefix` transform after another one.
References
security-advisories@github.comhttps://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315
security-advisories@github.comhttps://github.com/OISF/suricata/security/advisories/GHSA-59q6-j4w8-8pjx
security-advisories@github.comhttps://redmine.openinfosecfoundation.org/issues/8537
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "suricata",
          "vendor": "OISF",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 7.0.16"
            },
            {
              "status": "affected",
              "version": "\u003e= 8.0.0, \u003c 8.0.5"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, Suricata\u0027s inspection-buffer helper could leave an inspection pointer referencing freed memory after a chained transform caused the backing buffer to be reallocated. The issue is reached during a specific network traffic processing, and requires a specific but not malicious rule. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, avoid rules that chain `dotprefix` transform after another one."
    }
  ],
  "id": "CVE-2026-45751",
  "lastModified": "2026-09-11T16:17:06.520",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-45751",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-11T15:16:16.183696Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-10T21:17:27.260",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/OISF/suricata/security/advisories/GHSA-59q6-j4w8-8pjx"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://redmine.openinfosecfoundation.org/issues/8537"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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