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CVE-2026-84783

🗓️ 29 Sep 2026 15:32:24Reported by opensslType 
cve
 cve
🔗 web.nvd.nist.gov👁 5 Views

Use-after-free in OpenSSL X.509 Extension Cache causes remote unauthenticated DoS.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
cvelist
Cvelist
CVE-2026-84783 Use-After-Free in X.509 Extension Cache Under Concurrent Use
29 Sep 202615:32
–cvelist
euvd
EUVD
EUVD-2026-89014
29 Sep 202615:32
–euvd
nvd
NVD
CVE-2026-84783
29 Sep 202616:17
–nvd
openssl
OpenSSL
Use-After-Free in X.509 Extension Cache Under Concurrent Use
29 Sep 202600:00
–openssl
redhatcve
RedhatCVE
CVE-2026-84783
29 Sep 202617:24
–redhatcve
vulnrichment
Vulnrichment
CVE-2026-84783 Use-After-Free in X.509 Extension Cache Under Concurrent Use
29 Sep 202615:32
–vulnrichment
Vulners
Node
opensslopensslRange4.0.0–4.0.3
[
  {
    "defaultStatus": "unaffected",
    "product": "OpenSSL",
    "vendor": "OpenSSL",
    "versions": [
      {
        "lessThan": "4.0.3",
        "status": "affected",
        "version": "4.0.0",
        "versionType": "semver"
      }
    ]
  }
]

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29 Sep 2026 17:17Current
6Medium risk
Vulners AI Score6
CVSS 3.17.5
SSVC
5