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CVE-2026-63073 Untrusted Sender DN Used as Format String in CMP Response Validation

🗓️ 25 Aug 2026 12:59:43Reported by opensslType 
cvelist
 cvelist
🔗 www.cve.org👁 39 Views

OpenSSL CMP validation uses attacker-controlled sender DN as format string, causing DoS.

Related
Affected
Refs
[
  {
    "defaultStatus": "unaffected",
    "product": "OpenSSL",
    "vendor": "OpenSSL",
    "versions": [
      {
        "lessThan": "4.0.2",
        "status": "affected",
        "version": "4.0.0",
        "versionType": "semver"
      },
      {
        "lessThan": "3.6.4",
        "status": "affected",
        "version": "3.6.0",
        "versionType": "semver"
      },
      {
        "lessThan": "3.5.8",
        "status": "affected",
        "version": "3.5.0",
        "versionType": "semver"
      },
      {
        "lessThan": "3.4.7",
        "status": "affected",
        "version": "3.4.0",
        "versionType": "semver"
      }
    ]
  }
]

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25 Aug 2026 12:59Current
CVSS 3.19.8
EPSS0.01159
SSVC
39