{
  "site": "https://pwn.watch",
  "generatedAt": "2026-10-22T22:28:51.438Z",
  "tag": {
    "id": "barracuda",
    "label": "Barracuda",
    "isStack": false,
    "url": "https://pwn.watch/t/barracuda",
    "feed": "https://pwn.watch/t/barracuda/feed.xml"
  },
  "counts": {
    "incidents": 1,
    "live": 0,
    "notFullyPatched": 0,
    "patched": 1
  },
  "incidents": [
    {
      "slug": "barracuda-esg-zero-day-cve-2023-2868",
      "title": "Barracuda Email Security Gateway zero-day (CVE-2023-2868)",
      "url": "https://pwn.watch/i/barracuda-esg-zero-day-cve-2023-2868",
      "json": "https://pwn.watch/i/barracuda-esg-zero-day-cve-2023-2868.json",
      "status": "closed",
      "severity": "critical",
      "patchStatus": "patched",
      "product": "Barracuda Email Security Gateway (appliance)",
      "tags": [
        "barracuda",
        "email-security",
        "zero-day",
        "rce",
        "china",
        "cisa-kev"
      ],
      "cveIds": [
        "CVE-2023-2868"
      ],
      "affectedVersions": [
        "5.1.3.001 to 9.2.0.006 (appliance form factor only) (NVD)"
      ],
      "fixedVersions": [
        "See vendor advisory (patch pushed to all appliances May 20–21, 2023; compromised appliances must be replaced)"
      ],
      "startedAt": "2023-05-18",
      "closedAt": "2023-06-15",
      "updatedAt": "2023-06-15",
      "summary": "A command injection in how Barracuda ESG appliances scan .tar attachments was exploited since October 2022 by China-nexus UNC4841 to backdoor appliances. Barracuda later told customers to replace compromised appliances outright, even after patching.",
      "xPost": null
    }
  ],
  "posts": [],
  "changes": [
    {
      "incident": "barracuda-esg-zero-day-cve-2023-2868",
      "incidentTitle": "Barracuda Email Security Gateway zero-day (CVE-2023-2868)",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2023-06-15",
      "title": "Mandiant attributes the campaign to China-nexus UNC4841",
      "body": null,
      "sourceUrl": "https://cloud.google.com/blog/topics/threat-intelligence/barracuda-esg-exploited-globally",
      "url": "https://pwn.watch/i/barracuda-esg-zero-day-cve-2023-2868"
    },
    {
      "incident": "barracuda-esg-zero-day-cve-2023-2868",
      "incidentTitle": "Barracuda Email Security Gateway zero-day (CVE-2023-2868)",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2023-06-06",
      "title": "Barracuda tells customers to replace compromised appliances immediately, regardless of patch level",
      "body": null,
      "sourceUrl": "https://www.barracuda.com/company/legal/esg-vulnerability",
      "url": "https://pwn.watch/i/barracuda-esg-zero-day-cve-2023-2868"
    },
    {
      "incident": "barracuda-esg-zero-day-cve-2023-2868",
      "incidentTitle": "Barracuda Email Security Gateway zero-day (CVE-2023-2868)",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2023-05-30",
      "title": "Barracuda: exploitation dates back to October 2022, with SALTWATER, SEASPY and SEASIDE malware",
      "body": null,
      "sourceUrl": "https://www.barracuda.com/company/legal/esg-vulnerability",
      "url": "https://pwn.watch/i/barracuda-esg-zero-day-cve-2023-2868"
    },
    {
      "incident": "barracuda-esg-zero-day-cve-2023-2868",
      "incidentTitle": "Barracuda Email Security Gateway zero-day (CVE-2023-2868)",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2023-05-26",
      "title": "CISA adds CVE-2023-2868 to the KEV catalog",
      "body": null,
      "sourceUrl": null,
      "url": "https://pwn.watch/i/barracuda-esg-zero-day-cve-2023-2868"
    },
    {
      "incident": "barracuda-esg-zero-day-cve-2023-2868",
      "incidentTitle": "Barracuda Email Security Gateway zero-day (CVE-2023-2868)",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2023-05-20",
      "title": "Security patch pushed to all ESG appliances worldwide",
      "body": null,
      "sourceUrl": "https://www.barracuda.com/company/legal/esg-vulnerability",
      "url": "https://pwn.watch/i/barracuda-esg-zero-day-cve-2023-2868"
    },
    {
      "incident": "barracuda-esg-zero-day-cve-2023-2868",
      "incidentTitle": "Barracuda Email Security Gateway zero-day (CVE-2023-2868)",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2023-05-18",
      "title": "Barracuda notices anomalous traffic from ESG appliances",
      "body": null,
      "sourceUrl": "https://www.barracuda.com/company/legal/esg-vulnerability",
      "url": "https://pwn.watch/i/barracuda-esg-zero-day-cve-2023-2868"
    }
  ]
}