{"cve":"CVE-2011-4096","nvd":{"published":"2011-11-17T19:55:01.453","modified":"2026-06-16T23:34:25.017","status":"Modified","description":"The idnsGrokReply function in Squid before 3.1.16 does not properly free memory, which allows remote attackers to cause a denial of service (daemon abort) via a DNS reply containing a CNAME record that references another CNAME record that contains an empty A record.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-399"],"references":["http://bugs.squid-cache.org/show_bug.cgi?id=3237#c12","http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html","http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html","http://secunia.com/advisories/46609","http://secunia.com/advisories/47459"],"products":["squid-cache:squid"],"source":"nvd","synced_at":"2026-10-19T19:59:31.623151214+00:00"},"epss":{"cve":"CVE-2011-4096","score":0.37186,"percentile":0.98521,"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."]}