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CVE-2025-20134 Cisco Adaptive Security Appliance and Firepower Threat Defense Software SSL/TLS Certificate Denial of Service Vulnerability

🗓️ 14 Aug 2025 16:28:07Reported by ciscoType 
cvelist
 cvelist
🔗 www.cve.org👁 6 Views

DoS via SSL certificate parsing on Cisco ASA and FTD; unauthenticated attacker can reload device.

Related
Affected
Refs
[
  {
    "vendor": "Cisco",
    "product": "Cisco Adaptive Security Appliance (ASA) Software",
    "versions": [
      {
        "version": "9.12.4.39",
        "status": "affected"
      },
      {
        "version": "9.12.4.40",
        "status": "affected"
      },
      {
        "version": "9.14.4.6",
        "status": "affected"
      },
      {
        "version": "9.14.4.7",
        "status": "affected"
      },
      {
        "version": "9.12.4.41",
        "status": "affected"
      },
      {
        "version": "9.12.4.47",
        "status": "affected"
      },
      {
        "version": "9.14.4.12",
        "status": "affected"
      },
      {
        "version": "9.12.4.48",
        "status": "affected"
      },
      {
        "version": "9.14.4.13",
        "status": "affected"
      },
      {
        "version": "9.12.4.50",
        "status": "affected"
      },
      {
        "version": "9.14.4.14",
        "status": "affected"
      },
      {
        "version": "9.12.4.52",
        "status": "affected"
      },
      {
        "version": "9.14.4.15",
        "status": "affected"
      },
      {
        "version": "9.12.4.54",
        "status": "affected"
      },
      {
        "version": "9.14.4.17",
        "status": "affected"
      },
      {
        "version": "9.12.4.55",
        "status": "affected"
      },
      {
        "version": "9.14.4.22",
        "status": "affected"
      },
      {
        "version": "9.14.4.23",
        "status": "affected"
      },
      {
        "version": "9.12.4.56",
        "status": "affected"
      },
      {
        "version": "9.12.4.58",
        "status": "affected"
      },
      {
        "version": "9.12.4.62",
        "status": "affected"
      },
      {
        "version": "9.12.4.65",
        "status": "affected"
      },
      {
        "version": "9.12.4.67",
        "status": "affected"
      },
      {
        "version": "9.14.4.24",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Cisco",
    "product": "Cisco Firepower Threat Defense Software",
    "versions": [
      {
        "version": "6.6.5.2",
        "status": "affected"
      },
      {
        "version": "6.4.0.15",
        "status": "affected"
      },
      {
        "version": "6.6.7",
        "status": "affected"
      },
      {
        "version": "6.4.0.16",
        "status": "affected"
      },
      {
        "version": "6.6.7.1",
        "status": "affected"
      },
      {
        "version": "6.4.0.17",
        "status": "affected"
      },
      {
        "version": "6.6.7.2",
        "status": "affected"
      },
      {
        "version": "6.4.0.18",
        "status": "affected"
      }
    ],
    "defaultStatus": "unknown"
  }
]

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