{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-75883","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","state":"PUBLISHED","assignerShortName":"redhat","dateReserved":"2026-08-18T13:09:30.492Z","datePublished":"2026-09-18T15:29:07.702Z","dateUpdated":"2026-09-22T14:43:35.788Z"},"containers":{"cna":{"providerMetadata":{"orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","shortName":"redhat","dateUpdated":"2026-09-18T15:29:07.702Z"},"title":"PPPD buffer overflow in PEAP response code","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-122","description":"CWE-122 Heap-based buffer overflow","type":"CWE"}]}],"affected":[{"vendor":"PPP Project","product":"ppp","repo":"https://github.com/interchange/interchange/","versions":[{"status":"affected","version":"0","lessThanOrEqual":"2.5.0","versionType":"semver"},{"status":"unaffected","version":"2.5.4","versionType":"semver"}],"defaultStatus":"unknown"}],"descriptions":[{"lang":"en","value":"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.","supportingMedia":[{"type":"text/html","base64":false,"value":"The code in <code>pppd</code> that formats a response to a PEAP Request packet in <code>peap_response()</code> copies an entire TLS record of up to 16384 bytes into the fixed global buffer <code>outpacket_buf</code>\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 <code>outpacket_buf</code> array, most likely causing incorrect behavior or a crash."}]}],"references":[{"url":"https://github.com/ppp-project/ppp/security/advisories/GHSA-rwr9-4vx8-vc35","tags":["vendor-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"ADJACENT_NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE","baseSeverity":"MEDIUM","baseScore":6.8,"vectorString":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"}}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.5"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-22T14:43:07.472707Z","id":"CVE-2026-75883","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-22T14:43:35.788Z"}}]}}