{"affected":[{"product":"n/a","source":"CNA: mitre","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}],"cveId":"CVE-2026-106803","cwes":["CWE-121"],"description":"A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_registrar_pcscf module. When processing a crafted application/reginfo+xml NOTIFY message, process_contact() copies an attacker-controlled port value from the alias parameter into a fixed 5-byte stack buffer without validating its length. An unauthenticated remote attacker can trigger stack corruption and terminate the P-CSCF process, resulting in denial of service.","epss":null,"exploits":[{"kind":"exploit","source":"ADP: CISA-ADP","url":"https://github.com/kamailio/kamailio/issues/4954"}],"kev":null,"metrics":[{"score":9.8,"severity":"critical","source":"ADP: CISA-ADP","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1793712796962,"publishedAt":1793577600000,"references":[{"source":"CNA: mitre","tags":[],"url":"https://github.com/kamailio/kamailio/issues/4954"},{"source":"CNA: mitre","tags":[],"url":"https://github.com/kamailio/kamailio/pull/4958"},{"source":"CNA: mitre","tags":[],"url":"https://github.com/kamailio/kamailio/commit/21261436492f0014930e804e20586e3833bb91b9"},{"source":"CNA: mitre","tags":[],"url":"https://gist.github.com/hackeryounow/7d7ccc9ec501a5d8c9143b2e1bcc11cb"},{"source":"ADP: CISA-ADP","tags":["exploit"],"url":"https://github.com/kamailio/kamailio/issues/4954"},{"source":"cve@mitre.org","tags":[],"url":"https://gist.github.com/hackeryounow/7d7ccc9ec501a5d8c9143b2e1bcc11cb"},{"source":"cve@mitre.org","tags":[],"url":"https://github.com/kamailio/kamailio/commit/21261436492f0014930e804e20586e3833bb91b9"},{"source":"cve@mitre.org","tags":[],"url":"https://github.com/kamailio/kamailio/issues/4954"},{"source":"cve@mitre.org","tags":[],"url":"https://github.com/kamailio/kamailio/pull/4958"}],"remediation":[],"revision":"104e4dc47637dd9d7c3c3d0550b261938c70efb58a2cf36227d8d8d22ddfebf7","sources":[{"modifiedAt":1793712796962,"name":"CNA: mitre","retrievedAt":1793714907877,"url":"https://www.cve.org/CVERecord?id=CVE-2026-106803"},{"modifiedAt":1793648063993,"name":"NVD","retrievedAt":1793665906252,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106803"}],"ssvc":{"assessedAt":1793712698995,"automatable":"yes","exploitation":"poc","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"CVE-2026-106803","updatedAt":1793714907877}