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CVE-2026-45761

Estado: AnalizadaBaja (3.3)—

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, a crafted rule using mixed-case frame syntax could trigger a heap buffer overflow while Suricata is loading signatures. The issue is reached during rule parsing/loading rather than by network traffic alone. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, preprocess rules to check that frames are all lowercase and/or only load trusted rulesets.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Oisf — Suricata

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-45761",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-45761",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-15T15:01:49.482498Z"
        }
      }
    ],
    "cvssMetricV31": [
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 1.8
      }
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  },
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      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "OISF",
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          "versions": [
            {
              "status": "affected",
              "version": ">= 8.0.0, < 8.0.5"
            },
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              "status": "affected",
              "version": "< 7.0.16"
            }
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        }
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  ],
  "published": "2026-09-10T21:17:27.677",
  "references": [
    {
      "url": "https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
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      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/OISF/suricata/security/advisories/GHSA-r74x-74x5-r9vm",
      "tags": [
        "Vendor Advisory"
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      "source": "security-advisories@github.com"
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      "url": "https://redmine.openinfosecfoundation.org/issues/8526",
      "tags": [
        "Permissions Required"
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      "source": "security-advisories@github.com"
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  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-122"
        }
      ]
    }
  ],
  "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, a crafted rule using mixed-case frame syntax could trigger a heap buffer overflow while Suricata is loading signatures. The issue is reached during rule parsing/loading rather than by network traffic alone. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, preprocess rules to check that frames are all lowercase and/or only load trusted rulesets."
    }
  ],
  "lastModified": "2026-09-16T20:17:47.337",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndExcluding": "7.0.16",
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              "versionEndExcluding": "8.0.5",
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          ],
          "operator": "OR"
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  "sourceIdentifier": "security-advisories@github.com"
}