{"id":"CVE-2026-75883","aliases":["AZL-103302","BELL-CVE-2026-75883","DEBIAN-CVE-2026-75883","EUVD-2026-82994","GHSA-rwr9-4vx8-vc35","OESA-2026-4116","OESA-2026-4117","OESA-2026-4118","UBUNTU-CVE-2026-75883","openSUSE-SU-2026:11802-1"],"status":"published","title":"Pppd: pppd: buffer overflow in peap response handling leads to data corruption or denial of service.","description":"A flaw was found in pppd. A remote attacker could exploit a buffer overflow vulnerability in the PEAP response handling. By sending a specially crafted PEAP Request packet, an attacker could cause the pppd process to corrupt global static data, leading to incorrect behavior or a system crash.","severity":{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00285,"percentile":0.2119,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-120","CWE-122"],"published":"2026-09-17T00:00:00Z","modified":"2026-11-06T10:04:07Z","fixes":[{"ecosystem":"Alpaquita:25","package":"ppp","fixed_in":["2.5.4-r0"],"sources":["osv"]},{"ecosystem":"Alpaquita:stream","package":"ppp","fixed_in":["2.5.4-r0"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS-SP3","package":"ppp","fixed_in":["2.5.0-6.oe2403sp3"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS-SP4","package":"ppp","fixed_in":["2.5.0-6.oe2403sp4"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS-SP1","package":"ppp","fixed_in":["2.5.0-6.oe2403sp1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"ppp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2.5.0-1"}]}]},{"source":"osv","ecosystem":"Alpaquita:25","package":"ppp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.5.2-r0"},{"fixed":"2.5.4-r0"}]}]},{"source":"osv","ecosystem":"Alpaquita:stream","package":"ppp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.5.0-r2"},{"fixed":"2.5.4-r0"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"ppp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.5.2-1+1","2.5.2-1+1.1","2.5.2-1+1.2","2.5.2-1+2","2.5.5-1+1~exp1"]},{"source":"osv","ecosystem":"Debian:14","package":"ppp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.5.2-1+1","2.5.2-1+1.1","2.5.2-1+1.2","2.5.2-1+2","2.5.5-1+1~exp1"]},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP3","package":"ppp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.0-6.oe2403sp3"}]}]},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP4","package":"ppp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.0-6.oe2403sp4"}]}]},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP1","package":"ppp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.0-6.oe2403sp1"}]}]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"network-manager-l2tp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.8-1","1.2.8-2build1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"network-manager-l2tp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.10-1","1.2.14-1","1.2.16-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"network-manager-l2tp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.18-1build1","1.20.0-1","1.20.0-1build1","1.20.0-1build2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"network-manager-l2tp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.20.8-1","1.20.10-1","1.20.12-1","1.20.12-1build1","1.20.12-1build2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"network-manager-l2tp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.52.0-2","1.52.2-1","1.52.4-1","1.52.4-1build1","1.52.6-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"network-manager-l2tp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.20.20-2","1.52.0-2"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"NetworkManager-l2tp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.52.6-1.1"}]}],"bundled":2}],"products":[{"vendor":"red hat","product":"red hat enterprise linux 10"},{"vendor":"red hat","product":"red hat enterprise linux 6"},{"vendor":"red hat","product":"red hat enterprise linux 7"},{"vendor":"red hat","product":"red hat enterprise linux 8"},{"vendor":"red hat","product":"red hat enterprise linux 9"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-75883","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2538346","tags":["issue-tracking","x_refsource_REDHAT"]},{"url":"https://github.com/ppp-project/ppp/security/advisories/GHSA-rwr9-4vx8-vc35","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-75883","tags":["web","advisory"]},{"url":"https://docs.bell-sw.com/security/cves/CVE-2026-75883","tags":["advisory"]},{"url":"https://github.com/interchange/interchange/","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75883.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-75883","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4116","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4117","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4118","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-75883","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-75883","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-75131","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-75883","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-75883","title":"Pppd: pppd: buffer overflow in peap response handling leads to data corruption or denial of service.","description":"A flaw was found in pppd. A remote attacker could exploit a buffer overflow vulnerability in the PEAP response handling. By sending a specially crafted PEAP Request packet, an attacker could cause the pppd process to corrupt global static data, leading to incorrect behavior or a system crash.","status":"published","published":"2026-09-18T15:29:07.702Z","modified":"2026-11-06T00:43:49.782Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-120"],"updated_at":"2026-11-06T01:55:46.939755Z"}],"euvd":[{"id":"EUVD-2026-82994","description":"A flaw was found in pppd. A remote attacker could exploit a buffer overflow vulnerability in the PEAP response handling. By sending a specially crafted PEAP Request packet, an attacker could cause the pppd process to corrupt global static data, leading to incorrect behavior or a system crash.","status":"published","published":"2026-09-18T15:29:07Z","modified":"2026-11-06T00:43:49Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"medium"}],"updated_at":"2026-11-06T02:02:53.341523Z"}],"nvd":[{"id":"CVE-2026-75883","description":"A flaw was found in pppd. A remote attacker could exploit a buffer overflow vulnerability in the PEAP response handling. By sending a specially crafted PEAP Request packet, an attacker could cause the pppd process to corrupt global static data, leading to incorrect behavior or a system crash.","status":"published","published":"2026-09-18T16:17:09.167Z","modified":"2026-11-06T01:17:50.893Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-120"],"updated_at":"2026-11-06T06:59:05.647867Z"}],"osv":[{"id":"BELL-CVE-2026-75883","status":"published","published":"2026-09-17T06:05:40.214148Z","modified":"2026-09-27T07:15:03.657222228Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:28:26.041478Z"},{"id":"CVE-2026-75883","title":"PPPD buffer overflow in PEAP response code","description":"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.","status":"published","published":"2026-09-18T15:29:07.702Z","modified":"2026-10-28T02:30:27.092546466Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"medium"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T15:45:17.102988Z"},{"id":"DEBIAN-CVE-2026-75883","description":"A flaw was found in pppd. A remote attacker could exploit a buffer overflow vulnerability in the PEAP response handling. By sending a specially crafted PEAP Request packet, an attacker could cause the pppd process to corrupt global static data, leading to incorrect behavior or a system crash.","status":"published","published":"2026-09-18T16:17:09.167Z","modified":"2026-11-06T10:04:07.064878212Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"medium"}],"updated_at":"2026-11-06T10:38:22.758306Z"},{"id":"OESA-2026-4116","title":"ppp security update","description":"The Point-to-Point Protocol (PPP) provides a standard way to establish a network connection over a serial link.  At present, this package supports IP and IPV6 and the protocols layered above them, such as TCP and UDP.  The Linux port of this package also has support for IPX.\r\n\r\nSecurity Fix(es):\n\nThe 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.(CVE-2026-75883)","status":"published","published":"2026-09-25T01:28:37Z","modified":"2026-09-25T01:45:13.202209053Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:47.643553Z"},{"id":"OESA-2026-4117","title":"ppp security update","description":"The Point-to-Point Protocol (PPP) provides a standard way to establish a network connection over a serial link.  At present, this package supports IP and IPV6 and the protocols layered above them, such as TCP and UDP.  The Linux port of this package also has support for IPX.\r\n\r\nSecurity Fix(es):\n\nThe 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.(CVE-2026-75883)","status":"published","published":"2026-09-25T01:28:37Z","modified":"2026-09-25T01:45:13.105183634Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:47.643553Z"},{"id":"OESA-2026-4118","title":"ppp security update","description":"The Point-to-Point Protocol (PPP) provides a standard way to establish a network connection over a serial link.  At present, this package supports IP and IPV6 and the protocols layered above them, such as TCP and UDP.  The Linux port of this package also has support for IPX.\r\n\r\nSecurity Fix(es):\n\nThe 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.(CVE-2026-75883)","status":"published","published":"2026-09-25T01:28:38Z","modified":"2026-09-25T01:45:13.763632453Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:47.643553Z"},{"id":"UBUNTU-CVE-2026-75883","description":"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  without checking the available space and without implementing outgoing PEAP fragmentation. Thus a pppd process connecting to a server which requests PEAP authentication can be induced to corrupt global static data following the outpacket_buf array, most likely causing incorrect behavior or a crash.","status":"published","published":"2026-09-18T16:17:00Z","modified":"2026-10-17T13:01:06.173179482Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T16:57:13.483205Z"},{"id":"AZL-103302","title":"CVE-2026-75883 affecting package ppp 2.5.0-1","description":"A flaw was found in pppd. A remote attacker could exploit a buffer overflow vulnerability in the PEAP response handling. By sending a specially crafted PEAP Request packet, an attacker could cause the pppd process to corrupt global static data, leading to incorrect behavior or a system crash.","status":"published","published":"2026-09-18T16:17:09Z","modified":"2026-11-05T14:16:52.727675344Z","updated_at":"2026-11-05T16:41:17.326541Z"},{"id":"openSUSE-SU-2026:11802-1","title":"NetworkManager-applet-l2tp-1.52.6-1.1 on GA media","description":"These are all security issues fixed in the NetworkManager-applet-l2tp-1.52.6-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-09-17T00:00:00Z","modified":"2026-09-18T18:23:08.619380687Z","updated_at":"2026-11-02T16:58:39.516824Z"}]}}