{
  "site": "https://pwn.watch",
  "generatedAt": "2026-10-22T16:23:59.585Z",
  "tag": {
    "id": "f5",
    "label": "F5",
    "isStack": false,
    "url": "https://pwn.watch/t/f5",
    "feed": "https://pwn.watch/t/f5/feed.xml"
  },
  "counts": {
    "incidents": 3,
    "live": 0,
    "notFullyPatched": 0,
    "patched": 3
  },
  "incidents": [
    {
      "slug": "f5-big-ip-cve-2025-53521",
      "title": "F5 BIG-IP: F5 BIG-IP Stack-Based Buffer Overflow Vulnerability",
      "url": "https://pwn.watch/i/f5-big-ip-cve-2025-53521",
      "json": "https://pwn.watch/i/f5-big-ip-cve-2025-53521.json",
      "status": "closed",
      "severity": "high",
      "patchStatus": "patched",
      "product": "F5 BIG-IP",
      "tags": [
        "f5",
        "cisa-kev",
        "rce"
      ],
      "cveIds": [
        "CVE-2025-53521"
      ],
      "affectedVersions": [
        "See vendor advisory / CISA notes (versions not always listed in KEV feed)"
      ],
      "fixedVersions": [
        "See vendor advisory linked in sources"
      ],
      "startedAt": "2026-03-27",
      "closedAt": "2026-03-27",
      "updatedAt": "2026-03-27",
      "summary": "F5 BIG-IP APM contains a stack-based buffer overflow vulnerability that could allow a threat actor to achieve remote code execution. Added to CISA KEV on 2026-03-27.",
      "xPost": null
    },
    {
      "slug": "f5-nation-state-breach-big-ip-source-code-2025",
      "title": "F5 breached by nation-state actor: BIG-IP source code and undisclosed bugs stolen",
      "url": "https://pwn.watch/i/f5-nation-state-breach-big-ip-source-code-2025",
      "json": "https://pwn.watch/i/f5-nation-state-breach-big-ip-source-code-2025.json",
      "status": "closed",
      "severity": "critical",
      "patchStatus": "patched",
      "product": "F5 BIG-IP (vendor breach)",
      "tags": [
        "f5",
        "nation-state",
        "china",
        "brickstorm",
        "data-breach"
      ],
      "cveIds": [],
      "affectedVersions": [
        "BIG-IP, F5OS, BIG-IP Next and others (see F5 K000154696 and Oct 2025 Quarterly Security Notification)"
      ],
      "fixedVersions": [
        "F5 October 2025 Quarterly Security Notification releases"
      ],
      "startedAt": "2025-08-09",
      "closedAt": "2025-10-15",
      "updatedAt": "2025-10-15",
      "summary": "F5 disclosed that a sophisticated nation-state actor had long-term access to its BIG-IP development and engineering systems and stole parts of the BIG-IP source code, information on undisclosed vulnerabilities and some customer configuration data. CISA issued Emergency Directive 26-01 ordering agencies to inventory and patch F5 gear. Researchers linked it to China-nexus UNC5221 and BRICKSTORM.",
      "xPost": null
    },
    {
      "slug": "f5-big-ip-configuration-utility-cve-2023-46747-46748",
      "title": "F5 BIG-IP Configuration Utility: 2 exploited vulnerabilities (CVE-2023-46747, CVE-2023-46748)",
      "url": "https://pwn.watch/i/f5-big-ip-configuration-utility-cve-2023-46747-46748",
      "json": "https://pwn.watch/i/f5-big-ip-configuration-utility-cve-2023-46747-46748.json",
      "status": "closed",
      "severity": "critical",
      "patchStatus": "patched",
      "product": "F5 BIG-IP Configuration Utility",
      "tags": [
        "f5",
        "ransomware",
        "cisa-kev",
        "sql-injection",
        "auth-bypass"
      ],
      "cveIds": [
        "CVE-2023-46747",
        "CVE-2023-46748"
      ],
      "affectedVersions": [
        "See vendor advisory / CISA notes (versions not always listed in KEV feed)"
      ],
      "fixedVersions": [
        "See vendor advisory linked in sources"
      ],
      "startedAt": "2023-10-31",
      "closedAt": "2023-10-31",
      "updatedAt": "2023-10-31",
      "summary": "F5 BIG-IP Configuration utility contains an authentication bypass using an alternate path or channel vulnerability due to undisclosed requests that may allow an unauthenticated attacker with network access to the BIG-IP system through the management port and/or self IP addresses to execute system commands. This vulnerability can be used in conjunction with CVE-2023-46748. F5 BIG-IP Configuration utility contains an SQL injection vulnerability that may allow an authenticated attacker with network access through the BIG-IP management port and/or self IP addresses to execute system commands. This vulnerability can be used in conjunction with CVE-2023-46747. Added to CISA KEV on 2023-10-31. CISA lists known use in ransomware campaigns.",
      "xPost": null
    }
  ],
  "posts": [],
  "changes": [
    {
      "incident": "f5-big-ip-cve-2025-53521",
      "incidentTitle": "F5 BIG-IP: F5 BIG-IP Stack-Based Buffer Overflow Vulnerability",
      "severity": "high",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2026-03-27",
      "title": "CISA added CVE-2025-53521 to the KEV catalog (due 2026-03-30).",
      "body": null,
      "sourceUrl": null,
      "url": "https://pwn.watch/i/f5-big-ip-cve-2025-53521"
    },
    {
      "incident": "f5-nation-state-breach-big-ip-source-code-2025",
      "incidentTitle": "F5 breached by nation-state actor: BIG-IP source code and undisclosed bugs stolen",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2025-10-15",
      "title": "F5 discloses the breach (SEC 8-K) and ships patches",
      "body": null,
      "sourceUrl": "https://my.f5.com/manage/s/article/K000154696",
      "url": "https://pwn.watch/i/f5-nation-state-breach-big-ip-source-code-2025"
    },
    {
      "incident": "f5-nation-state-breach-big-ip-source-code-2025",
      "incidentTitle": "F5 breached by nation-state actor: BIG-IP source code and undisclosed bugs stolen",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2025-10-15",
      "title": "CISA issues Emergency Directive 26-01 for F5 devices",
      "body": null,
      "sourceUrl": "https://www.cisa.gov/news-events/directives/ed-26-01-mitigate-vulnerabilities-f5-devices",
      "url": "https://pwn.watch/i/f5-nation-state-breach-big-ip-source-code-2025"
    },
    {
      "incident": "f5-nation-state-breach-big-ip-source-code-2025",
      "incidentTitle": "F5 breached by nation-state actor: BIG-IP source code and undisclosed bugs stolen",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2025-08-09",
      "title": "F5 learns of the intrusion",
      "body": null,
      "sourceUrl": "https://www.sec.gov/Archives/edgar/data/1048695/000104869525000149/ffiv-20251015.htm",
      "url": "https://pwn.watch/i/f5-nation-state-breach-big-ip-source-code-2025"
    },
    {
      "incident": "f5-big-ip-configuration-utility-cve-2023-46747-46748",
      "incidentTitle": "F5 BIG-IP Configuration Utility: 2 exploited vulnerabilities (CVE-2023-46747, CVE-2023-46748)",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2023-10-31",
      "title": "CISA added CVE-2023-46747 to the KEV catalog (due 2023-11-21).",
      "body": null,
      "sourceUrl": null,
      "url": "https://pwn.watch/i/f5-big-ip-configuration-utility-cve-2023-46747-46748"
    },
    {
      "incident": "f5-big-ip-configuration-utility-cve-2023-46747-46748",
      "incidentTitle": "F5 BIG-IP Configuration Utility: 2 exploited vulnerabilities (CVE-2023-46747, CVE-2023-46748)",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2023-10-31",
      "title": "CISA added CVE-2023-46748 to the KEV catalog (due 2023-11-21).",
      "body": null,
      "sourceUrl": null,
      "url": "https://pwn.watch/i/f5-big-ip-configuration-utility-cve-2023-46747-46748"
    }
  ]
}