RADIUS Protocol under RFC2865 is vulnerable to forgery attacks.

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  "url": "https://osv.dev/vulnerability/CVE-2024-3596",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "RADIUS Protocol under RFC2865 is vulnerable to forgery attacks.",
    "summary": "RADIUS Protocol under RFC 2865 is susceptible to forgery attacks by a local attacker who can modify any valid Response (Access-Accept, Access-Reject, or Access-Challenge) to any other response using a chosen-prefix collision attack against MD5 Response Authenticator signature.",
    "evidence": "osv:CVE-2024-3596",
    "products": [],
    "severity": "critical",
    "structured": {
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      "aliases": [
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          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H"
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              "repo": "https://github.com/freeradius/freeradius-server",
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                    "range": [
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                        "fixed": "3.0.27"
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      "modified": "2026-10-28T02:30:50.627168022Z",
      "provider": "osv",
      "references": [
        "https://cert-portal.siemens.com/productcert/html/ssa-364175.html",
        "https://cert-portal.siemens.com/productcert/html/ssa-770770.html",
        "https://datatracker.ietf.org/doc/draft-ietf-radext-deprecating-radius/",
        "https://datatracker.ietf.org/doc/html/rfc2865",
        "https://networkradius.com/assets/pdf/radius_and_md5_collisions.pdf",
        "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0014",
        "https://today.ucsd.edu/story/computer-scientists-discover-vulnerabilities-in-a-popular-security-protocol",
        "https://www.blastradius.fail/",
        "https://www.kb.cert.org/vuls/id/456537",
        "https://cert-portal.siemens.com/productcert/html/ssa-723487.html",
        "https://cert-portal.siemens.com/productcert/html/ssa-794185.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/3xxx/CVE-2024-3596.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-3596",
        "https://security.netapp.com/advisory/ntap-20240822-0001/"
      ],
      "provider_metadata": {
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        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "2865"
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                    "last_affected": "2865"
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    "related_cves": [
      {
        "value": "CVE-2024-3596",
        "evidence": "/id"
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    "security_relevant": true,
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  "source_id": "core-osv",
  "document_id": 519411,
  "published_at": "2024-07-09T12:02:53.001+00:00"
}