{
  "fix": "SUSE-SU-2026:3541-1",
  "url": "https://patchblox.com/security/fix/linux/suse-su-2026-3541-1",
  "summary": "SUSE-SU-2026:3541-1, released August 10, 2026, fixes 8 CVEs in libssh2_org (version 1.11.0-150600.20.6.1). None of them is reported as exploited. Patch Radar priority: High.",
  "platform": "linux",
  "type": "advisory",
  "title": "libssh2_org security update",
  "released": "2026-08-10T12:50:14Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2026-66033, high severity",
  "supported": true,
  "cveCount": 8,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00648,
  "maxCvss": 8.8,
  "vendorAdvisory": "https://osv.dev/vulnerability/SUSE-SU-2026:3541-1",
  "appliesTo": [
    {
      "product": "libssh2_org",
      "productUrl": "https://patchblox.com/security/product/linux/libssh2-org",
      "release": "sles 15.6",
      "fixedVersion": "1.11.0-150600.20.6.1",
      "supported": true
    },
    {
      "product": "libssh2_org",
      "productUrl": "https://patchblox.com/security/product/linux/libssh2-org",
      "release": "sles 15.7",
      "fixedVersion": "1.11.0-150600.20.6.1",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2026-66033",
      "url": "https://patchblox.com/security/cve/CVE-2026-66033",
      "title": "libssh2 Integer Underflow DoS via AES-GCM Cipher Negotiation",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.00583,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-66035",
      "url": "https://patchblox.com/security/cve/CVE-2026-66035",
      "title": "libssh2 Heap Buffer Overflow via ETM Cipher Negotiation",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.00472,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-7598",
      "url": "https://patchblox.com/security/cve/CVE-2026-7598",
      "title": "libssh2 userauth.c userauth_password integer overflow",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 7.3,
      "epss": 0.00466,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-66032",
      "url": "https://patchblox.com/security/cve/CVE-2026-66032",
      "title": "libssh2 Double-Free Heap Corruption via sftp_open()",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00448,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-58050",
      "url": "https://patchblox.com/security/cve/CVE-2026-58050",
      "title": "libssh2 - Integer Overflow in publickey Subsystem Attribute Allocation",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.00444,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-66034",
      "url": "https://patchblox.com/security/cve/CVE-2026-66034",
      "title": "libssh2 Heap Out-of-Bounds Read via publickey subsystem",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.00402,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-15661",
      "url": "https://patchblox.com/security/cve/CVE-2025-15661",
      "title": "libssh2 - Heap Buffer Over-read via sftp_symlink() in sftp.c",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 6.5,
      "epss": 0.00648,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-58051",
      "url": "https://patchblox.com/security/cve/CVE-2026-58051",
      "title": "libssh2: libssh2 through 1.11.1 grows its publickey list with SSH2_REALLOC but does not zero-initialize new entries before par...",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.00277,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-10T20:03:11Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}