{
  "site": "https://pwn.watch",
  "generatedAt": "2026-10-22T19:58:23.236Z",
  "tag": {
    "id": "lockbit",
    "label": "LockBit",
    "isStack": false,
    "url": "https://pwn.watch/t/lockbit",
    "feed": "https://pwn.watch/t/lockbit/feed.xml"
  },
  "counts": {
    "incidents": 2,
    "live": 0,
    "notFullyPatched": 0,
    "patched": 2
  },
  "incidents": [
    {
      "slug": "citrix-bleed-netscaler-cve-2023-4966",
      "title": "Citrix Bleed: NetScaler session token leak (CVE-2023-4966)",
      "url": "https://pwn.watch/i/citrix-bleed-netscaler-cve-2023-4966",
      "json": "https://pwn.watch/i/citrix-bleed-netscaler-cve-2023-4966.json",
      "status": "closed",
      "severity": "critical",
      "patchStatus": "patched",
      "product": "Citrix NetScaler ADC and NetScaler Gateway",
      "tags": [
        "citrix",
        "netscaler",
        "zero-day",
        "session-hijacking",
        "lockbit",
        "ransomware",
        "cisa-kev"
      ],
      "cveIds": [
        "CVE-2023-4966"
      ],
      "affectedVersions": [
        "NetScaler ADC and Gateway configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server (NVD); exact builds: see vendor advisory"
      ],
      "fixedVersions": [
        "14.1-8.50",
        "13.1-49.15",
        "13.0-92.19",
        "FIPS/NDcPP builds: see vendor advisory"
      ],
      "startedAt": "2023-10-10",
      "closedAt": "2023-11-21",
      "updatedAt": "2023-12-18",
      "summary": "A memory leak in NetScaler ADC and Gateway let attackers read session tokens and hijack logged-in sessions, bypassing passwords and MFA. It was exploited as a zero-day from late August 2023, then widely by LockBit affiliates. Victims included Xfinity (35.9M users).",
      "xPost": null
    },
    {
      "slug": "papercut-mf-ng-auth-bypass-cve-2023-27350",
      "title": "PaperCut MF/NG auth bypass to SYSTEM RCE, used by Cl0p and LockBit (CVE-2023-27350)",
      "url": "https://pwn.watch/i/papercut-mf-ng-auth-bypass-cve-2023-27350",
      "json": "https://pwn.watch/i/papercut-mf-ng-auth-bypass-cve-2023-27350.json",
      "status": "closed",
      "severity": "critical",
      "patchStatus": "patched",
      "product": "PaperCut MF and PaperCut NG",
      "tags": [
        "papercut",
        "auth-bypass",
        "rce",
        "cl0p",
        "lockbit",
        "ransomware",
        "cisa-kev"
      ],
      "cveIds": [
        "CVE-2023-27350"
      ],
      "affectedVersions": [
        "See vendor advisory"
      ],
      "fixedVersions": [
        "20.1.7",
        "21.2.11",
        "22.0.9"
      ],
      "startedAt": "2023-04-21",
      "closedAt": "2023-05-11",
      "updatedAt": "2023-05-11",
      "summary": "An improper access control bug in PaperCut NG/MF print management let unauthenticated attackers run code as SYSTEM. Fixes had shipped in March 2023, but unpatched servers were exploited from April. Microsoft linked it to Cl0p (Lace Tempest) and LockBit, and the Bl00dy gang hit schools with it.",
      "xPost": null
    }
  ],
  "posts": [],
  "changes": [
    {
      "incident": "citrix-bleed-netscaler-cve-2023-4966",
      "incidentTitle": "Citrix Bleed: NetScaler session token leak (CVE-2023-4966)",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2023-12-18",
      "title": "Xfinity discloses that Citrix Bleed exploitation on Oct 16–19 exposed data on 35.9M customers",
      "body": null,
      "sourceUrl": "https://www.theverge.com/2023/12/18/24007082/xfinity-data-breach-hack-notice-citrix",
      "url": "https://pwn.watch/i/citrix-bleed-netscaler-cve-2023-4966"
    },
    {
      "incident": "citrix-bleed-netscaler-cve-2023-4966",
      "incidentTitle": "Citrix Bleed: NetScaler session token leak (CVE-2023-4966)",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2023-11-21",
      "title": "CISA, FBI, MS-ISAC and ACSC warn that LockBit 3.0 affiliates are exploiting Citrix Bleed (AA23-325A)",
      "body": null,
      "sourceUrl": "https://www.cisa.gov/news-events/cybersecurity-advisories/aa23-325a",
      "url": "https://pwn.watch/i/citrix-bleed-netscaler-cve-2023-4966"
    },
    {
      "incident": "citrix-bleed-netscaler-cve-2023-4966",
      "incidentTitle": "Citrix Bleed: NetScaler session token leak (CVE-2023-4966)",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2023-10-23",
      "title": "Citrix issues additional mitigation guidance",
      "body": null,
      "sourceUrl": "https://assets.xfinity.com/assets/dotcom/learn/Notice%20To%20Customers%20of%20Data%20Security%20Incident.pdf",
      "url": "https://pwn.watch/i/citrix-bleed-netscaler-cve-2023-4966"
    },
    {
      "incident": "citrix-bleed-netscaler-cve-2023-4966",
      "incidentTitle": "Citrix Bleed: NetScaler session token leak (CVE-2023-4966)",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2023-10-18",
      "title": "CISA adds CVE-2023-4966 to the KEV catalog",
      "body": null,
      "sourceUrl": null,
      "url": "https://pwn.watch/i/citrix-bleed-netscaler-cve-2023-4966"
    },
    {
      "incident": "citrix-bleed-netscaler-cve-2023-4966",
      "incidentTitle": "Citrix Bleed: NetScaler session token leak (CVE-2023-4966)",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2023-10-17",
      "title": "Mandiant reports zero-day exploitation since late August 2023 and session hijacking that survives patching",
      "body": null,
      "sourceUrl": "https://cloud.google.com/blog/topics/threat-intelligence/session-hijacking-citrix-cve-2023-4966",
      "url": "https://pwn.watch/i/citrix-bleed-netscaler-cve-2023-4966"
    },
    {
      "incident": "citrix-bleed-netscaler-cve-2023-4966",
      "incidentTitle": "Citrix Bleed: NetScaler session token leak (CVE-2023-4966)",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2023-10-10",
      "title": "Citrix publishes bulletin CTX579459 and fixed builds",
      "body": null,
      "sourceUrl": "https://support.citrix.com/external/article/CTX579459/netscaler-adc-and-netscaler-gateway-secu.html",
      "url": "https://pwn.watch/i/citrix-bleed-netscaler-cve-2023-4966"
    },
    {
      "incident": "papercut-mf-ng-auth-bypass-cve-2023-27350",
      "incidentTitle": "PaperCut MF/NG auth bypass to SYSTEM RCE, used by Cl0p and LockBit (CVE-2023-27350)",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2023-05-11",
      "title": "CISA and FBI advisory AA23-131A: Bl00dy Ransomware Gang targeting education via PaperCut",
      "body": null,
      "sourceUrl": "https://www.cisa.gov/news-events/cybersecurity-advisories/aa23-131a",
      "url": "https://pwn.watch/i/papercut-mf-ng-auth-bypass-cve-2023-27350"
    },
    {
      "incident": "papercut-mf-ng-auth-bypass-cve-2023-27350",
      "incidentTitle": "PaperCut MF/NG auth bypass to SYSTEM RCE, used by Cl0p and LockBit (CVE-2023-27350)",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2023-04-21",
      "title": "PaperCut warns that unpatched servers are being exploited in the wild; CISA adds CVE-2023-27350 to KEV",
      "body": null,
      "sourceUrl": "https://www.papercut.com/kb/Main/PO-1216-and-PO-1219",
      "url": "https://pwn.watch/i/papercut-mf-ng-auth-bypass-cve-2023-27350"
    }
  ]
}