{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "2.5.0"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "760ce18f82670eb81cc186fb792919339a2e2fbe"
            }
          ],
          "repo": "https://github.com/ppp-project/ppp",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-rwr9-4vx8-vc35"
  ],
  "database_specific": {
    "cna_assigner": "redhat",
    "cwe_ids": [
      "CWE-122"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75883.json"
  },
  "details": "The code in pppd that formats a response to a PEAP Request packet in peap_response() copies an entire TLS record of up to 16384 bytes into the fixed global buffer outpacket_buf\n without checking the available space and without implementing outgoing \nPEAP fragmentation. Thus a pppd process connecting to a server which \nrequests PEAP authentication can be induced to corrupt global static \ndata following the outpacket_buf array, most likely causing incorrect behavior or a crash.",
  "id": "CVE-2026-75883",
  "modified": "2026-09-20T11:30:31.180054090Z",
  "published": "2026-09-18T15:29:07.702Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/interchange/interchange/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75883.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/ppp-project/ppp/security/advisories/GHSA-rwr9-4vx8-vc35"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-75883"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "PPPD buffer overflow in PEAP response code"
}