{"cve":"CVE-2011-1147","nvd":{"published":"2011-03-15T17:55:05.953","modified":"2026-06-16T23:28:49.020","status":"Modified","description":"Multiple stack-based and heap-based buffer overflows in the (1) decode_open_type and (2) udptl_rx_packet functions in main/udptl.c in Asterisk Open Source 1.4.x before 1.4.39.2, 1.6.1.x before 1.6.1.22, 1.6.2.x before 1.6.2.16.2, and 1.8 before 1.8.2.4; Business Edition C.x.x before C.3.6.3; AsteriskNOW 1.5; and s800i (Asterisk Appliance), when T.38 support is enabled, allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted UDPTL packet.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-119"],"references":["http://downloads.asterisk.org/pub/security/AST-2011-002.html","http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055030.html","http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055421.html","http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055634.html","http://secunia.com/advisories/43429"],"products":["digium:asterisk","digium:asterisknow","digium:s800i"],"source":"nvd","synced_at":"2026-10-19T19:57:56.749847046+00:00"},"epss":{"cve":"CVE-2011-1147","score":0.03525,"percentile":0.89239,"date":"2026-11-01"},"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."]}