{"cve":"CVE-2016-0762","nvd":{"published":"2017-08-10T16:29:00.313","modified":"2026-10-08T22:16:38.120","status":"Modified","description":"The Realm implementations in Apache Tomcat versions 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70 and 6.0.0 to 6.0.45 did not process the supplied password if the supplied user name did not exist. This made a timing attack possible to determine valid user names. Note that the default configuration includes the LockOutRealm which makes exploitation of this vulnerability harder.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","score":5.9},"cwes":["CWE-203"],"references":["http://rhn.redhat.com/errata/RHSA-2017-0457.html","http://www.debian.org/security/2016/dsa-3720","http://www.securityfocus.com/bid/93939","http://www.securitytracker.com/id/1037144","https://access.redhat.com/errata/RHSA-2017:0455"],"products":["apache:tomcat","canonical:ubuntu_linux","debian:debian_linux","netapp:oncommand_insight","netapp:oncommand_shift","netapp:snap_creator_framework","oracle:communications_diameter_signaling_router","oracle:tekelec_platform_distribution","redhat:enterprise_linux_desktop","redhat:enterprise_linux_eus","redhat:enterprise_linux_server","redhat:enterprise_linux_server_aus","redhat:enterprise_linux_server_tus","redhat:enterprise_linux_workstation","redhat:jboss_enterprise_web_server"],"source":"nvd","synced_at":"2026-10-19T20:44:47.710380879+00:00"},"epss":{"cve":"CVE-2016-0762","score":0.07991,"percentile":0.94719,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-wxcp-f2c8-x6xv","url":"https://osv.dev/vulnerability/GHSA-wxcp-f2c8-x6xv","summary":"Observable Discrepancy in Apache Tomcat","modified":"2024-03-11T05:51:03.113750Z","packages":[{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","ranges":[">=9.0.0M1 <9.0.0.M10"],"fixed":["9.0.0.M10"]},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","ranges":[">=8.5.0 <8.5.5"],"fixed":["8.5.5"]},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","ranges":[">=8.0.0.RC1 <8.0.37"],"fixed":["8.0.37"]},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","ranges":[">=7.0.0 <7.0.72"],"fixed":["7.0.72"]},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","ranges":[">=6.0.0 <6.0.46"],"fixed":["6.0.46"]}]}],"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."]}