{"id":"CVE-2015-1243","url":"https://www.cyber-defence.io/tools/cve/CVE-2015-1243","generatedAt":"2026-10-29T04:02:37.988Z","title":"Use-after-free vulnerability in the MutationObserver::disconnect function in core/dom/MutationObserver.cpp in the DOM implementation in Blink, as used in Google Chrome before 42.0.2311.135, allows remote attackers to cause a denial of service or…","description":"Use-after-free vulnerability in the MutationObserver::disconnect function in core/dom/MutationObserver.cpp in the DOM implementation in Blink, as used in Google Chrome before 42.0.2311.135, allows remote attackers to cause a denial of service or possibly have unspecified other impact by triggering an attempt to unregister a MutationObserver object that is not currently registered.","published":"2015-05-01T10:59:05.000Z","lastModified":"2026-06-17T00:22:02.000Z","status":"Modified","sourceIdentifier":"chrome-cve-admin@google.com","cvss":{"version":"2.0","score":7.5,"severity":"HIGH","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P"},"cwe":[],"affected":["google/chrome","debian/debian linux","canonical/ubuntu linux","redhat/enterprise linux desktop supplementary","redhat/enterprise linux server supplementary","redhat/enterprise linux server supplementary eus","redhat/enterprise linux workstation supplementary"],"epss":{"score":0.01979,"percentile":0.80454,"date":"2026-10-28","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.98%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://googlechromereleases.blogspot.com/2015/04/stable-channel-update_28.html","source":"chrome-cve-admin@google.com"},{"url":"http://lists.opensuse.org/opensuse-updates/2015-05/msg00009.html","source":"chrome-cve-admin@google.com"},{"url":"http://rhn.redhat.com/errata/RHSA-2015-0921.html","source":"chrome-cve-admin@google.com"},{"url":"http://www.debian.org/security/2015/dsa-3242","source":"chrome-cve-admin@google.com"},{"url":"http://www.securityfocus.com/bid/74389","source":"chrome-cve-admin@google.com"},{"url":"http://www.securitytracker.com/id/1032234","source":"chrome-cve-admin@google.com"},{"url":"http://www.ubuntu.com/usn/USN-2582-1","source":"chrome-cve-admin@google.com"},{"url":"https://code.google.com/p/chromium/issues/detail?id=453279","source":"chrome-cve-admin@google.com"},{"url":"https://security.gentoo.org/glsa/201506-04","source":"chrome-cve-admin@google.com"},{"url":"https://src.chromium.org/viewvc/blink?revision=192655&view=revision","source":"chrome-cve-admin@google.com"},{"url":"http://googlechromereleases.blogspot.com/2015/04/stable-channel-update_28.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-updates/2015-05/msg00009.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://rhn.redhat.com/errata/RHSA-2015-0921.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.debian.org/security/2015/dsa-3242","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/74389","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1032234","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.ubuntu.com/usn/USN-2582-1","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://code.google.com/p/chromium/issues/detail?id=453279","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/201506-04","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://src.chromium.org/viewvc/blink?revision=192655&view=revision","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2015-1243","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."}