{"id":"CVE-2026-75883","summary":"PPPD buffer overflow in PEAP response code","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.","aliases":["GHSA-rwr9-4vx8-vc35"],"modified":"2026-09-19T03:47:22.689762574Z","published":"2026-09-18T15:29:07.702Z","related":["openSUSE-SU-2026:11802-1"],"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"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75883.json"},{"type":"WEB","url":"https://github.com/interchange/interchange/"},{"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/ppp-project/ppp","events":[{"introduced":"0"},{"last_affected":"760ce18f82670eb81cc186fb792919339a2e2fbe"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"2.5.0"}],"source":"AFFECTED_FIELD"}}],"versions":["v2.5.0","ppp-2.5.0","v2.4.9","ppp-2.4.9","2.4.9","v2.4.8","ppp-2.4.8","v2.4.7","ppp-2.4.7","v2.4.6","ppp-2.4.6","v2.4.5","ppp-2.4.5","v2.4.4","ppp-2.4.4","v2.4.3","ppp-2.4.3","v2.4.2","ppp-2.4.2","v2.4.1","ppp-2.4.1","v2.4.0","ppp-2.4.0","v2.3.11","ppp-2.3.11","v2.3.10","ppp-2.3.10","v2.3.9","ppp-2.3.9","v2.3.8","ppp-2.3.8","v2.3.7","ppp-2.3.7","v2.3.6","ppp-2.3.6","v2.3.5","ppp-2.3.5","v2.3.4","ppp-2.3.4","v2.3.3","ppp-2.3.3","v2.3.2","ppp-2.3.2","v2.3.1","ppp-2.3.1","v2.3.0","ppp-2.3.0","v2.2","ppp-2.2","v2.1.2","ppp-2.1.2","v2.1.1","ppp-2.1.1","v2.0.4","ppp-2.0.4"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-75883.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"}]}