{"cve":{"cve_id":"CVE-2006-4253","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.14074,"epss_percentile":0.96087,"epss_as_of":"2026-06-23","description":"Concurrency vulnerability in Mozilla Firefox 1.5.0.6 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via multiple Javascript timed events that load a deeply nested XML file, followed by redirecting the browser to another page, which leads to a concurrency failure that causes structures to be freed incorrectly, as demonstrated by (1) ffoxdie and (2) ffoxdie3.  NOTE: it has been reported that Netscape 8.1 and K-Meleon 1.0.1 are also affected by ffoxdie.  Mozilla confirmed to CVE that ffoxdie and ffoxdie3 trigger the same underlying vulnerability.  NOTE: it was later reported that Firefox 2.0 RC2 and 1.5.0.7 are also affected.","published_at":"2006-08-21T20:00:00Z","last_modified_at":"2026-06-16T22:28:43.270000Z","cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-264"],"nvd_references":["http://www.securityfocus.com/archive/1/448956/100/100/threaded","http://www.securityfocus.com/archive/1/443500/100/100/threaded","http://securitytracker.com/id?1016847","http://secunia.com/advisories/22391","http://www.vupen.com/english/advisories/2006/3748","http://www.redhat.com/support/errata/RHSA-2006-0676.html","http://www.mozilla.org/security/announce/2006/mfsa2006-59.html","http://lcamtuf.coredump.cx/ffoxdie.html","http://secunia.com/advisories/22055","http://secunia.com/advisories/22195","https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9528","http://www.ubuntu.com/usn/usn-352-1","http://secunia.com/advisories/21513","http://secunia.com/advisories/21950","http://www.ubuntu.com/usn/usn-351-1","http://secunia.com/advisories/22025","http://secunia.com/advisories/22056","http://www.mandriva.com/security/advisories?name=MDKSA-2006:168","http://www.securityfocus.com/archive/1/443020/100/100/threaded","http://secunia.com/advisories/22210","http://secunia.com/advisories/24711","http://security.gentoo.org/glsa/glsa-200610-04.xml","http://support.avaya.com/elmodocs2/security/ASA-2006-224.htm","http://www.pianetapc.it/view.php?id=770","http://www.vupen.com/english/advisories/2008/0083","http://www.securityfocus.com/archive/1/443528/100/0/threaded","ftp://patches.sgi.com/support/free/security/advisories/20060901-01-P.asc","http://secunia.com/advisories/21939","http://securitytracker.com/id?1016848","http://www.vupen.com/english/advisories/2006/3617","http://secunia.com/advisories/21915","http://www.vupen.com/english/advisories/2007/1198","http://www.securityfocus.com/archive/1/447837/100/200/threaded","http://www.redhat.com/support/errata/RHSA-2006-0677.html","http://security.gentoo.org/glsa/glsa-200609-19.xml","http://www1.itrc.hp.com/service/cki/docDisplay.do?docId=c00771742","http://www.securityfocus.com/archive/1/448984/100/100/threaded","http://secunia.com/advisories/22274","http://www.redhat.com/support/errata/RHSA-2006-0675.html","http://secunia.com/advisories/21940","http://secunia.com/advisories/22001","http://www.securityfocus.com/archive/1/446140/100/0/threaded","http://www.ubuntu.com/usn/usn-350-1","http://secunia.com/advisories/21906","http://www1.itrc.hp.com/service/cki/docDisplay.do?docId=c00771742","http://www.securityfocus.com/archive/1/449245/100/100/threaded","http://security.gentoo.org/glsa/glsa-200610-01.xml","http://secunia.com/advisories/22074","http://secunia.com/advisories/22066","http://secunia.com/advisories/22088","http://www.securityfocus.com/archive/1/443306/100/100/threaded","http://secunia.com/advisories/21949","http://www.novell.com/linux/security/advisories/2006_54_mozilla.html","https://bugzilla.mozilla.org/show_bug.cgi?id=348514","http://www.securityfocus.com/bid/19534","https://issues.rpath.com/browse/RPL-640","http://www.securityfocus.com/archive/1/447840/100/200/threaded","http://lcamtuf.coredump.cx/ffoxdie3.html","http://www.securityfocus.com/archive/1/449726/100/0/threaded","http://secunia.com/advisories/22036","http://securitytracker.com/id?1016846","http://www.ubuntu.com/usn/usn-354-1","http://www.securityfocus.com/bid/19488","http://www.securityfocus.com/archive/1/449487/100/0/threaded","http://secunia.com/advisories/22422","http://www.mandriva.com/security/advisories?name=MDKSA-2006:169","http://www.securiteam.com/securitynews/5VP0M0AJFW.html","http://secunia.com/advisories/21916"],"vuln_status":"Modified","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:03:32.067135Z"},"effective_severity":null,"badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"k-meleon-project","vendor_name":"k-meleon_project","product_slug":"k-meleon","product_name":"k-meleon","version_start":"1.0.1","version_start_inclusive":true,"version_end":"1.0.1","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:k-meleon_project:k-meleon:1.0.1:*:*:*:*:*:*:*"},{"vendor_slug":"mozilla","vendor_name":"Mozilla","product_slug":"firefox","product_name":"Firefox","version_start":"0.8","version_start_inclusive":true,"version_end":"0.8","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:mozilla:firefox:0.8:*:*:*:*:*:*:*"},{"vendor_slug":"mozilla","vendor_name":"Mozilla","product_slug":"firefox","product_name":"Firefox","ve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