{"id":"CVE-2026-90558","title":"sngrep through 1.8.4 contains stack buffer overflow vulnerabilities in SIP attribute formatting routines when header values exceed the 255-byte buffer limit","summary":"sngrep through 1.8.4 contains stack buffer overflow vulnerabilities in SIP attribute formatting routines when header values exceed the 255-byte buffer limit. Attackers can craft malicious SIP packets with oversized Call-ID, X-Call-ID, or…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-121"],"vendor":"irontec","product":"sngrep","affected":["sngrep <= 1.8.4"],"published":"2026-09-12","updated":"2026-09-14","sourceUpdated":"2026-09-14T19:18:06.007","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90558","references":[{"url":"https://github.com/irontec/sngrep","label":"disclosure@vulncheck.com"},{"url":"https://github.com/irontec/sngrep/blob/v1.8.4/src/sip_call.c#L260","label":"disclosure@vulncheck.com"},{"url":"https://github.com/irontec/sngrep/blob/v1.8.4/src/sip_msg.c#L150","label":"disclosure@vulncheck.com"},{"url":"https://github.com/irontec/sngrep/commit/1ff74ee3ab5ff280e8ba976aa8c744dca57eb35b","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/sngrep-through-1.8.4-stack-buffer-overflow-via-sip-headers","label":"disclosure@vulncheck.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90558.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-90558"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90558"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-14T18:23:35.937384Z"},"ingestedAt":"2026-09-14T15:23:07.478Z","epss":0.00507,"epssPercentile":0.42311,"slug":"CVE-2026-90558","body":"## Overview\n\nsngrep through 1.8.4 contains stack buffer overflow vulnerabilities in SIP attribute formatting routines when header values exceed the 255-byte buffer limit. Attackers can craft malicious SIP packets with oversized Call-ID, X-Call-ID, or other header fields to overflow stack buffers and cause crashes or execute arbitrary code during packet parsing and rendering.\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 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90558.json)","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}