{"cve":"CVE-2011-4598","nvd":{"published":"2011-12-15T03:57:34.357","modified":"2026-06-16T23:35:06.977","status":"Modified","description":"The handle_request_info function in channels/chan_sip.c in Asterisk Open Source 1.6.2.x before 1.6.2.21 and 1.8.x before 1.8.7.2, when automon is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted sequence of SIP requests.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-200"],"references":["http://downloads.asterisk.org/pub/security/AST-2011-014.html","http://openwall.com/lists/oss-security/2011/12/09/3","http://openwall.com/lists/oss-security/2011/12/09/4","http://osvdb.org/77598","http://secunia.com/advisories/47273"],"products":["digium:asterisk"],"source":"nvd","synced_at":"2026-10-19T19:59:31.623151214+00:00"},"epss":{"cve":"CVE-2011-4598","score":0.02354,"percentile":0.83737,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}