{"id":"CVE-2026-106804","aliases":["EUVD-2026-115345","GHSA-wm7p-xjpr-gf9g","UBUNTU-CVE-2026-106804"],"status":"published","title":"A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_qos_npn module. The...","description":"A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_qos_npn module. The w_rx_aar_register() function copies the attacker-controlled host field from the SIP `Via` header into a fixed 46-byte stack buffer without validating its length. An unauthenticated remote attacker can trigger the vulnerability with a crafted SIP `REGISTER` request, causing stack corruption and termination of the affected Kamailio instance, resulting in denial of service.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00573,"percentile":0.47775,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120","CWE-121","CWE-20"],"published":"2026-11-02T00:00:00Z","modified":"2026-11-04T03:30:10Z","affected":[{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"kamailio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.3.1-2ubuntu1","4.3.4-1.1ubuntu1","4.3.4-1.1ubuntu2","4.3.4-1.1ubuntu2.1","4.3.4-1.1ubuntu2.1+esm1","4.3.4-1.1ubuntu2.1+esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"kamailio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.4.2-3ubuntu5","5.0.4-1ubuntu1","5.1.1-1ubuntu1","5.1.1-1ubuntu4","5.1.2-1ubuntu1","5.1.2-1ubuntu2","5.1.2-1ubuntu2+esm1","5.1.2-1ubuntu2+esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"kamailio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2.3-1build3","5.2.3-1build4","5.3.0-2","5.3.1-1","5.3.2-1build1","5.3.2-1build2","5.3.2-1build3","5.3.2-1ubuntu0.1~esm1","5.3.2-1ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"kamailio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.4.4-1build1","5.4.4-1ubuntu1","5.4.4-1ubuntu2","5.5.4-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"kamailio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.7.0-1build1","5.7.2-1build1","5.7.3-1","5.7.4-1","5.7.4-1build1","5.7.4-1build5","5.7.4-1build7"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"kamailio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.0.5-1ubuntu1","6.1.2-1ubuntu2","6.1.2-1ubuntu3","6.1.2-1ubuntu4"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"kamailio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.0.2-2","6.0.5-1","6.0.5-1build1","6.0.5-1ubuntu1"]}],"references":[{"url":"https://github.com/kamailio/kamailio/issues/4953","tags":["exploit","report"]},{"url":"https://gist.github.com/hackeryounow/f5af75502ea6df600428c46bb9bbf39e","tags":["report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106804"},{"url":"https://github.com/advisories/GHSA-wm7p-xjpr-gf9g"},{"url":"https://ubuntu.com/security/CVE-2026-106804","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-106804","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-106804","description":"A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_qos_npn module. The w_rx_aar_register() function copies the attacker-controlled host field from the SIP `Via` header into a fixed 46-byte stack buffer without validating its length. An unauthenticated remote attacker can trigger the vulnerability with a crafted SIP `REGISTER` request, causing stack corruption and termination of the affected Kamailio instance, resulting in denial of service.","status":"published","published":"2026-11-02T00:00:00Z","modified":"2026-11-02T18:55:18.235Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-121","CWE-120","CWE-20"],"updated_at":"2026-11-02T19:47:06.831391Z"}],"euvd":[{"id":"EUVD-2026-115345","description":"A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_qos_npn module. The w_rx_aar_register() function copies the attacker-controlled host field from the SIP `Via` header into a fixed 46-byte stack buffer without validating its length. An unauthenticated remote attacker can trigger the vulnerability with a crafted SIP `REGISTER` request, causing stack corruption and termination of the affected Kamailio instance, resulting in denial of service.","status":"published","published":"2026-11-02T00:00:00Z","modified":"2026-11-02T18:55:18Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T05:08:38.713005Z"}],"ghsa":[{"id":"GHSA-wm7p-xjpr-gf9g","title":"A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_qos_npn module. The...","description":"A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_qos_npn module. The w_rx_aar_register() function copies the attacker-controlled host field from the SIP `Via` header into a fixed 46-byte stack buffer without validating its length. An unauthenticated remote attacker can trigger the vulnerability with a crafted SIP `REGISTER` request, causing stack corruption and termination of the affected Kamailio instance, resulting in denial of service.","status":"published","published":"2026-11-02T18:32:27Z","modified":"2026-11-02T21:33:00Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-03T00:02:49.048371Z"}],"nvd":[{"id":"CVE-2026-106804","description":"A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_qos_npn module. The w_rx_aar_register() function copies the attacker-controlled host field from the SIP `Via` header into a fixed 46-byte stack buffer without validating its length. An unauthenticated remote attacker can trigger the vulnerability with a crafted SIP `REGISTER` request, causing stack corruption and termination of the affected Kamailio instance, resulting in denial of service.","status":"published","published":"2026-11-02T17:17:33.453Z","modified":"2026-11-02T19:34:23.993Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-20","CWE-120","CWE-121"],"updated_at":"2026-11-03T00:02:42.67885Z"}],"osv":[{"id":"UBUNTU-CVE-2026-106804","description":"A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_qos_npn module. The w_rx_aar_register() function copies the attacker-controlled host field from the SIP `Via` header into a fixed 46-byte stack buffer without validating its length. An unauthenticated remote attacker can trigger the vulnerability with a crafted SIP `REGISTER` request, causing stack corruption and termination of the affected Kamailio instance, resulting in denial of service.","status":"published","published":"2026-11-02T17:17:00Z","modified":"2026-11-05T04:42:39Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-05T13:33:25.727744Z"}]}}