CVE-2026-76524 (GCVE-0-2026-76524)
Vulnerability from cvelistv5
Published
2026-10-21 16:18
Modified
2026-10-22 13:37
CWE
  • CWE-306 - Missing Authentication for Critical Function
Summary
A vulnerability in the control channel socket implementation of Open Source Snort 3 could allow an authenticated, local attacker with low privileges to execute arbitrary commands as the Snort 3 process user. This vulnerability is due to a lack of authentication when a local user connects to the Snort control channel socket. An attacker could exploit this vulnerability by connecting to the Snort 3 control channel socket as a local user. A successful exploit could allow the attacker to execute arbitrary commands as well as read and write Snort 3 process memory.
Impacted products
Vendor Product Version
Cisco Cisco Open Source Snort3 Version: 3.12.2.0
Version: 3.1.2.0
Version: 3.1.3.0
Version: 3.1.4.0
Version: 3.1.5.0
Version: 3.1.6.0
Version: 3.1.7.0
Version: 3.1.8.0
Version: 3.1.9.0
Version: 3.1.10.0
Version: 3.1.12.0
Version: 3.1.13.0
Version: 3.1.14.0
Version: 3.1.15.0
Version: 3.1.16.0
Version: 3.1.17.0
Version: 3.1.18.0
Version: 3.1.19.0
Version: 3.1.20.0
Version: 3.1.21.0
Version: 3.1.22.0
Version: 3.1.23.0
Version: 3.1.24.0
Version: 3.1.25.0
Version: 3.1.27.0
Version: 3.1.28.0
Version: 3.1.29.0
Version: 3.1.30.0
Version: 3.1.31.0
Version: 3.1.32.0
Version: 3.1.36.0
Version: 3.1.38.0
Version: 3.1.39.0
Version: 3.1.40.0
Version: 3.1.41.0
Version: 3.1.42.0
Version: 3.1.43.0
Version: 3.1.45.0
Version: 3.1.47.0
Version: 3.1.48.0
Version: 3.1.50.0
Version: 3.1.51.0
Version: 3.1.52.0
Version: 3.1.53.0
Version: 3.1.55.0
Version: 3.1.56.0
Version: 3.1.57.0
Version: 3.1.58.0
Version: 3.1.59.0
Version: 3.1.60.0
Version: 3.1.61.0
Version: 3.1.62.0
Version: 3.1.63.0
Version: 3.1.64.0
Version: 3.1.65.0
Version: 3.1.66.0
Version: 3.1.67.0
Version: 3.1.69.0
Version: 3.1.70.0
Version: 3.1.71.0
Version: 3.1.72.0
Version: 3.1.73.0
Version: 3.1.74.0
Version: 3.1.75.0
Version: 3.1.76.0
Version: 3.1.77.0
Version: 3.1.78.0
Version: 3.1.81.0
Version: 3.1.82.0
Version: 3.1.83.0
Version: 3.1.84.0
Version: 3.2.1.0
Version: 3.2.2.0
Version: 3.3.0.0
Version: 3.3.1.0
Version: 3.3.2.0
Version: 3.3.3.0
Version: 3.3.4.0
Version: 3.3.5.0
Version: 3.3.7.0
Version: 3.5.0.0
Version: 3.5.1.0
Version: 3.8.1.0
Version: 3.6.0.0
Version: 3.6.2.0
Version: 3.9.3.0
Version: 3.7.2.0
Version: 3.7.0.0
Version: 3.9.6.0
Version: 3.10.0.0
Version: 3.10.2.0
Version: 3.7.4.0
Version: 3.9.0.0
Version: 3.5.2.0
Version: 3.12.1.0
Version: 3.6.1.0
Version: 3.9.2.0
Version: 3.6.3.0
Version: 3.9.5.0
Version: 3.7.1.0
Version: 3.9.7.0
Version: 3.7.3.0
Version: 3.10.1.0
Version: 3.9.1.0
Version: 3.11.1.0
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      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the control channel socket implementation of\u0026nbsp;Open Source Snort 3 could allow an authenticated, local attacker with low privileges to execute arbitrary commands as the Snort 3 process user.\r\n\r\nThis vulnerability is due to a lack of authentication when a local user connects to the Snort control channel socket. An attacker could exploit this vulnerability by connecting to the Snort 3 control channel socket as a local user. A successful exploit could allow the attacker to execute arbitrary commands as well as read and write Snort 3 process memory."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
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            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
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        {
          "descriptions": [
            {
              "cweId": "CWE-306",
              "description": "Missing Authentication for Critical Function",
              "lang": "en",
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      "providerMetadata": {
        "dateUpdated": "2026-10-21T16:18:12.052Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-opensrc-snort3-2fXGJPfe",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-opensrc-snort3-2fXGJPfe"
        }
      ],
      "source": {
        "advisory": "cisco-sa-opensrc-snort3-2fXGJPfe",
        "defects": [
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        ],
        "discovery": "EXTERNAL"
      },
      "title": "Open Source Snort 3 Control Channel Socket Aribitrary Command Execution Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2026-76524",
    "datePublished": "2026-10-21T16:18:12.052Z",
    "dateReserved": "2026-08-19T12:02:03.643Z",
    "dateUpdated": "2026-10-22T13:37:52.029Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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{\"status\": \"affected\", \"version\": \"3.1.78.0\"}, {\"status\": \"affected\", \"version\": \"3.1.81.0\"}, {\"status\": \"affected\", \"version\": \"3.1.82.0\"}, {\"status\": \"affected\", \"version\": \"3.1.83.0\"}, {\"status\": \"affected\", \"version\": \"3.1.84.0\"}, {\"status\": \"affected\", \"version\": \"3.2.1.0\"}, {\"status\": \"affected\", \"version\": \"3.2.2.0\"}, {\"status\": \"affected\", \"version\": \"3.3.0.0\"}, {\"status\": \"affected\", \"version\": \"3.3.1.0\"}, {\"status\": \"affected\", \"version\": \"3.3.2.0\"}, {\"status\": \"affected\", \"version\": \"3.3.3.0\"}, {\"status\": \"affected\", \"version\": \"3.3.4.0\"}, {\"status\": \"affected\", \"version\": \"3.3.5.0\"}, {\"status\": \"affected\", \"version\": \"3.3.7.0\"}, {\"status\": \"affected\", \"version\": \"3.5.0.0\"}, {\"status\": \"affected\", \"version\": \"3.5.1.0\"}, {\"status\": \"affected\", \"version\": \"3.8.1.0\"}, {\"status\": \"affected\", \"version\": \"3.6.0.0\"}, {\"status\": \"affected\", \"version\": \"3.6.2.0\"}, {\"status\": \"affected\", \"version\": \"3.9.3.0\"}, {\"status\": \"affected\", \"version\": \"3.7.2.0\"}, {\"status\": \"affected\", \"version\": \"3.7.0.0\"}, {\"status\": \"affected\", \"version\": \"3.9.6.0\"}, {\"status\": \"affected\", \"version\": \"3.10.0.0\"}, {\"status\": \"affected\", \"version\": \"3.10.2.0\"}, {\"status\": \"affected\", \"version\": \"3.7.4.0\"}, {\"status\": \"affected\", \"version\": \"3.9.0.0\"}, {\"status\": \"affected\", \"version\": \"3.5.2.0\"}, {\"status\": \"affected\", \"version\": \"3.12.1.0\"}, {\"status\": \"affected\", \"version\": \"3.6.1.0\"}, {\"status\": \"affected\", \"version\": \"3.9.2.0\"}, {\"status\": \"affected\", \"version\": \"3.6.3.0\"}, {\"status\": \"affected\", \"version\": \"3.9.5.0\"}, {\"status\": \"affected\", \"version\": \"3.7.1.0\"}, {\"status\": \"affected\", \"version\": \"3.9.7.0\"}, {\"status\": \"affected\", \"version\": \"3.7.3.0\"}, {\"status\": \"affected\", \"version\": \"3.10.1.0\"}, {\"status\": \"affected\", \"version\": \"3.9.1.0\"}, {\"status\": \"affected\", \"version\": \"3.11.1.0\"}], \"defaultStatus\": \"unknown\"}], \"exploits\": [{\"lang\": \"en\", \"value\": \"The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.\"}], \"references\": [{\"url\": \"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-opensrc-snort3-2fXGJPfe\", \"name\": \"cisco-sa-opensrc-snort3-2fXGJPfe\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A vulnerability in the control channel socket implementation of\u0026nbsp;Open Source Snort 3 could allow an authenticated, local attacker with low privileges to execute arbitrary commands as the Snort 3 process user.\\r\\n\\r\\nThis vulnerability is due to a lack of authentication when a local user connects to the Snort control channel socket. An attacker could exploit this vulnerability by connecting to the Snort 3 control channel socket as a local user. A successful exploit could allow the attacker to execute arbitrary commands as well as read and write Snort 3 process memory.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"cwe\", \"cweId\": \"CWE-306\", \"description\": \"Missing Authentication for Critical Function\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2026-10-21T16:18:12.052Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-76524\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-22T13:37:52.029Z\", \"dateReserved\": \"2026-08-19T12:02:03.643Z\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2026-10-21T16:18:12.052Z\", \"assignerShortName\": \"cisco\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.


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