{"id":"CVE-2016-2177","url":"https://www.cyber-defence.io/tools/cve/CVE-2016-2177","generatedAt":"2026-10-27T18:46:32.341Z","title":"OpenSSL through 1.0.2h incorrectly uses pointer arithmetic for heap-buffer boundary checks, which might allow remote attackers to cause a denial of service (integer overflow and application crash) or possibly have unspecified other impact by leveraging…","description":"OpenSSL through 1.0.2h incorrectly uses pointer arithmetic for heap-buffer boundary checks, which might allow remote attackers to cause a denial of service (integer overflow and application crash) or possibly have unspecified other impact by leveraging unexpected malloc behavior, related to s3_srvr.c, ssl_sess.c, and t1_lib.c.","published":"2016-06-20T01:59:02.000Z","lastModified":"2026-06-17T00:43:36.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"3.0","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-190"],"affected":["hp/icewall mcrp","hp/icewall sso","hp/icewall sso agent option","openssl/openssl","oracle/linux","oracle/solaris"],"epss":{"score":0.44505,"percentile":0.98757,"date":"2026-10-26","history":[{"date":"2026-09-21","score":0.34659,"percentile":0.98391},{"date":"2026-09-22","score":0.44505,"percentile":0.98709}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 44.5%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[{"kind":"epss","label":"EPSS jump","at":"2026-09-22T00:00:00.000Z","detail":{"to":0.44505,"from":0.34659,"percentile":0.98709},"summary":"EPSS moved from 34.7% to 44.5% probability of exploitation in the next thirty days."}],"references":[{"url":"http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-09/msg00022.html","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-09/msg00023.html","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-09/msg00024.html","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-09/msg00031.html","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00005.html","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00011.html","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00012.html","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00029.html","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00010.html","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00011.html","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00032.html","source":"secalert@redhat.com"},{"url":"http://rhn.redhat.com/errata/RHSA-2016-1940.html","source":"secalert@redhat.com"},{"url":"http://rhn.redhat.com/errata/RHSA-2016-2957.html","source":"secalert@redhat.com"},{"url":"http://rhn.redhat.com/errata/RHSA-2017-1659.html","source":"secalert@redhat.com"},{"url":"http://seclists.org/fulldisclosure/2017/Jul/31","source":"secalert@redhat.com"},{"url":"http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160927-openssl","source":"secalert@redhat.com"},{"url":"http://www-01.ibm.com/support/docview.wss?uid=swg21995039","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://www.debian.org/security/2016/dsa-3673","source":"secalert@redhat.com"},{"url":"http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20170322-01-openssl-en","source":"secalert@redhat.com"},{"url":"http://www.openwall.com/lists/oss-security/2016/06/08/9","source":"secalert@redhat.com"},{"url":"http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html","source":"secalert@redhat.com"},{"url":"http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html","source":"secalert@redhat.com"},{"url":"http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html","source":"secalert@redhat.com"},{"url":"http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html","source":"secalert@redhat.com"},{"url":"http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://www.securityfocus.com/archive/1/540957/100/0/threaded","source":"secalert@redhat.com"},{"url":"http://www.securityfocus.com/archive/1/archive/1/540957/100/0/threaded","source":"secalert@redhat.com"},{"url":"http://www.securityfocus.com/bid/91319","tags":["Third Party Advisory","VDB Entry"],"source":"secalert@redhat.com"},{"url":"http://www.securitytracker.com/id/1036088","tags":["Third Party Advisory","VDB Entry"],"source":"secalert@redhat.com"},{"url":"http://www.splunk.com/view/SP-CAAAPSV","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://www.splunk.com/view/SP-CAAAPUE","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://www.ubuntu.com/usn/USN-3087-1","source":"secalert@redhat.com"},{"url":"http://www.ubuntu.com/usn/USN-3087-2","source":"secalert@redhat.com"},{"url":"http://www.ubuntu.com/usn/USN-3181-1","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2017:0193","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2017:0194","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2017:1658","source":"secalert@redhat.com"},{"url":"https://bto.bluecoat.com/security-advisory/sa132","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1341705","tags":["Issue Tracking","Patch"],"source":"secalert@redhat.com"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf","source":"secalert@redhat.com"},{"url":"https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=a004e72b95835136d3f1ea90517f706c24c03da7","source":"secalert@redhat.com"},{"url":"https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-c05302448","source":"secalert@redhat.com"},{"url":"https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03763en_us","source":"secalert@redhat.com"},{"url":"https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05302448","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://ics-cert.us-cert.gov/advisories/ICSA-18-144-01","source":"secalert@redhat.com"},{"url":"https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://kc.mcafee.com/corporate/index?page=content&id=SB10165","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://kc.mcafee.com/corporate/index?page=content&id=SB10215","source":"secalert@redhat.com"},{"url":"https://security.FreeBSD.org/advisories/FreeBSD-SA-16:26.openssl.asc","source":"secalert@redhat.com"},{"url":"https://security.gentoo.org/glsa/201612-16","tags":["Patch","Third Party Advisory","VDB Entry"],"source":"secalert@redhat.com"},{"url":"https://support.f5.com/csp/article/K23873366","source":"secalert@redhat.com"},{"url":"https://support.hpe.com/hpsc/doc/public/display?docLocale=en&docId=emr_na-hpesbhf03856en_us","source":"secalert@redhat.com"},{"url":"https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03856en_us","source":"secalert@redhat.com"},{"url":"https://www.arista.com/en/support/advisories-notices/security-advisories/1749-security-advisory-24","source":"secalert@redhat.com"},{"url":"https://www.citect.schneider-electric.com/safety-and-security-central/36-security-notifications/9134-vulnerabilities-within-schneider-electric-floating-license-manager","source":"secalert@redhat.com"},{"url":"https://www.schneider-electric.com/en/download/document/SEVD-2018-137-01/","source":"secalert@redhat.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2016-2177","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}