{"id":"CVE-2026-90779","title":"SIPp through 3.7.7 contains a stack buffer overflow vulnerability in createAuthHeader() when processing SIP authentication challenges with oversized algorithm parameters","summary":"SIPp through 3.7.7 contains a stack buffer overflow vulnerability in createAuthHeader() when processing SIP authentication challenges with oversized algorithm parameters. A malicious SIP server can send a crafted 401 or 407 challenge to …","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-121"],"vendor":"Red Hat","product":"sipp","affected":["sipp <= 3.7.7"],"published":"2026-09-13","updated":"2026-09-14","sourceUpdated":"2026-09-14T16:17:39.870","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90779","references":[{"url":"https://github.com/SIPp/sipp","label":"disclosure@vulncheck.com"},{"url":"https://github.com/SIPp/sipp/blob/v3.7.7/src/auth.cpp#L183-L192","label":"disclosure@vulncheck.com"},{"url":"https://github.com/SIPp/sipp/commit/1d4a5622bea34d0b5cdff333e6b5734608e30af7","label":"disclosure@vulncheck.com"},{"url":"https://github.com/SIPp/sipp/pull/880","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/sipp-through-3.7.7-stack-buffer-overflow-via-createauthheader-algorithm-parameter","label":"disclosure@vulncheck.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90779.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-90779"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90779"}],"tags":["nvd","csaf","vex","red-hat","cve.org"],"epss":0.00565,"epssPercentile":0.45428,"ingestedAt":"2026-09-14T15:23:07.470Z","ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-14T15:33:55.105739Z"},"slug":"CVE-2026-90779","body":"## Overview\n\nSIPp through 3.7.7 contains a stack buffer overflow vulnerability in createAuthHeader() when processing SIP authentication challenges with oversized algorithm parameters. A malicious SIP server can send a crafted 401 or 407 challenge to corrupt the stack and crash the client 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-2026-90779.json)","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}