{"id":"CVE-2026-90778","title":"SIPp through 3.7.7 contains a buffer overflow vulnerability in get_peer_tag() function when processing SIP To headers with tag parameters of 2049 bytes or more","summary":"SIPp through 3.7.7 contains a buffer overflow vulnerability in get_peer_tag() function when processing SIP To headers with tag parameters of 2049 bytes or more. Unauthenticated remote attackers can send crafted SIP messages with oversize…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-120"],"vendor":"SIPp","product":"sipp","affected":["sipp <= 3.7.7"],"published":"2026-09-13","updated":"2026-09-14","sourceUpdated":"2026-09-14T19:18:09.690","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90778","references":[{"url":"https://github.com/SIPp/sipp","label":"disclosure@vulncheck.com"},{"url":"https://github.com/SIPp/sipp/blob/v3.7.7/src/sip_parser.cpp#L76-L113","label":"disclosure@vulncheck.com"},{"url":"https://github.com/SIPp/sipp/commit/ddf22d1a54e0396b2e18ebaf4cf5a3fa860e5da4","label":"disclosure@vulncheck.com"},{"url":"https://github.com/SIPp/sipp/pull/879","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/sipp-through-3.7.7-buffer-overflow-via-sip-to-header-tag","label":"disclosure@vulncheck.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90778.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-90778"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90778"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-14T17:06:10.559977Z"},"ingestedAt":"2026-09-14T15:23:07.470Z","epss":0.00633,"epssPercentile":0.48966,"slug":"CVE-2026-90778","body":"## Overview\n\nSIPp through 3.7.7 contains a buffer overflow vulnerability in get_peer_tag() function when processing SIP To headers with tag parameters of 2049 bytes or more. Unauthenticated remote attackers can send crafted SIP messages with oversized tag parameters to overflow the static buffer and crash the process.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90778.json)","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}