{"api_version":"1","generated_at":"2026-07-23T10:17:13+00:00","cve":"CVE-2015-8743","urls":{"html":"https://cve.report/CVE-2015-8743","api":"https://cve.report/api/cve/CVE-2015-8743.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2015-8743","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2015-8743"},"summary":{"title":"CVE-2015-8743","description":"QEMU (aka Quick Emulator) built with the NE2000 device emulation support is vulnerable to an OOB r/w access issue. It could occur while performing 'ioport' r/w operations. A privileged (CAP_SYS_RAWIO) user/process could use this flaw to leak or corrupt QEMU memory bytes.","state":"PUBLISHED","assigner":"redhat","published_at":"2016-12-29 22:59:00","updated_at":"2026-05-06 22:30:45"},"problem_types":["CWE-125","CWE-787","n/a"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"7.1","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"}},{"version":"2.0","source":"nvd@nist.gov","type":"Primary","score":"3.6","severity":"","vector":"AV:L/AC:L/Au:N/C:P/I:P/A:N","data":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:P/I:P/A:N","baseScore":3.6,"accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"NONE"}}],"references":[{"url":"http://www.debian.org/security/2016/dsa-3469","name":"http://www.debian.org/security/2016/dsa-3469","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"title":"Debian -- Security Information -- DSA-3469-1 qemu","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.debian.org/security/2016/dsa-3470","name":"http://www.debian.org/security/2016/dsa-3470","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"title":"Debian -- Security Information -- DSA-3470-1 qemu-kvm","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1264929","name":"https://bugzilla.redhat.com/show_bug.cgi?id=1264929","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking"],"title":"Bug 1264929 – CVE-2015-8743 Qemu: net: ne2000: OOB memory access in ioport r/w functions","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.debian.org/security/2016/dsa-3471","name":"http://www.debian.org/security/2016/dsa-3471","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"title":"Debian -- Security Information -- DSA-3471-1 qemu","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.securitytracker.com/id/1034574","name":"http://www.securitytracker.com/id/1034574","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory","VDB Entry"],"title":"QEMU NE2000 Memory Access Error Lets Local Users Gain Elevated Privileges - SecurityTracker","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.openwall.com/lists/oss-security/2016/01/04/1","name":"http://www.openwall.com/lists/oss-security/2016/01/04/1","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"],"title":"oss-security - CVE request Qemu: net: ne2000: OOB r/w in ioport operations","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg00050.html","name":"https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg00050.html","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Vendor Advisory"],"title":"Re: [Qemu-devel] [PATCH v3] net: ne2000: fix bounds check in ioport\toper","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.openwall.com/lists/oss-security/2016/01/04/2","name":"http://www.openwall.com/lists/oss-security/2016/01/04/2","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"],"title":"oss-security - Re: CVE request Qemu: net: ne2000: OOB r/w in ioport operations","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.securityfocus.com/bid/79820","name":"http://www.securityfocus.com/bid/79820","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory","VDB Entry"],"title":"QEMU CVE-2015-8743 Information Disclosure Vulnerability","mime":"text/html","httpstatus":"200","archivestatus":"0"},{"url":"https://security.gentoo.org/glsa/201602-01","name":"https://security.gentoo.org/glsa/201602-01","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"title":"QEMU: Multiple vulnerabilities (GLSA 201602-01) — Gentoo security","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2015-8743","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-8743","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"n/a","product":"n/a","version":"affected n/a","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2015","cve_id":"8743","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"debian","cpe5":"debian_linux","cpe6":"7.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2015","cve_id":"8743","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"debian","cpe5":"debian_linux","cpe6":"8.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2015","cve_id":"8743","vulnerable":"1","versionEndIncluding":"2.5.1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"qemu","cpe5":"qemu","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2015","cve_id":"8743","cve":"CVE-2015-8743","epss":"0.000640000","percentile":"0.197900000","score_date":"2026-05-11","updated_at":"2026-05-12 00:01:18"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"providerMetadata":{"dateUpdated":"2024-08-06T08:29:21.247Z","orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE"},"references":[{"name":"[oss-security] 20160104 Re: CVE request Qemu: net: ne2000: OOB r/w in ioport operations","tags":["mailing-list","x_refsource_MLIST","x_transferred"],"url":"http://www.openwall.com/lists/oss-security/2016/01/04/2"},{"tags":["x_refsource_CONFIRM","x_transferred"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1264929"},{"name":"1034574","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"],"url":"http://www.securitytracker.com/id/1034574"},{"name":"79820","tags":["vdb-entry","x_refsource_BID","x_transferred"],"url":"http://www.securityfocus.com/bid/79820"},{"name":"[oss-security] 20160104 CVE request Qemu: net: ne2000: OOB r/w in ioport operations","tags":["mailing-list","x_refsource_MLIST","x_transferred"],"url":"http://www.openwall.com/lists/oss-security/2016/01/04/1"},{"name":"DSA-3469","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred"],"url":"http://www.debian.org/security/2016/dsa-3469"},{"name":"DSA-3470","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred"],"url":"http://www.debian.org/security/2016/dsa-3470"},{"name":"[qemu-devel] 20160104 Re: [PATCH v3] net: ne2000: fix bounds check in ioport operations","tags":["mailing-list","x_refsource_MLIST","x_transferred"],"url":"https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg00050.html"},{"name":"DSA-3471","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred"],"url":"http://www.debian.org/security/2016/dsa-3471"},{"name":"GLSA-201602-01","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred"],"url":"https://security.gentoo.org/glsa/201602-01"}],"title":"CVE Program Container"}],"cna":{"affected":[{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}],"datePublic":"2016-01-04T00:00:00.000Z","descriptions":[{"lang":"en","value":"QEMU (aka Quick Emulator) built with the NE2000 device emulation support is vulnerable to an OOB r/w access issue. It could occur while performing 'ioport' r/w operations. A privileged (CAP_SYS_RAWIO) user/process could use this flaw to leak or corrupt QEMU memory bytes."}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2017-11-03T18:57:01.000Z","orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","shortName":"redhat"},"references":[{"name":"[oss-security] 20160104 Re: CVE request Qemu: net: ne2000: OOB r/w in ioport operations","tags":["mailing-list","x_refsource_MLIST"],"url":"http://www.openwall.com/lists/oss-security/2016/01/04/2"},{"tags":["x_refsource_CONFIRM"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1264929"},{"name":"1034574","tags":["vdb-entry","x_refsource_SECTRACK"],"url":"http://www.securitytracker.com/id/1034574"},{"name":"79820","tags":["vdb-entry","x_refsource_BID"],"url":"http://www.securityfocus.com/bid/79820"},{"name":"[oss-security] 20160104 CVE request Qemu: net: ne2000: OOB r/w in ioport operations","tags":["mailing-list","x_refsource_MLIST"],"url":"http://www.openwall.com/lists/oss-security/2016/01/04/1"},{"name":"DSA-3469","tags":["vendor-advisory","x_refsource_DEBIAN"],"url":"http://www.debian.org/security/2016/dsa-3469"},{"name":"DSA-3470","tags":["vendor-advisory","x_refsource_DEBIAN"],"url":"http://www.debian.org/security/2016/dsa-3470"},{"name":"[qemu-devel] 20160104 Re: [PATCH v3] net: ne2000: fix bounds check in ioport operations","tags":["mailing-list","x_refsource_MLIST"],"url":"https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg00050.html"},{"name":"DSA-3471","tags":["vendor-advisory","x_refsource_DEBIAN"],"url":"http://www.debian.org/security/2016/dsa-3471"},{"name":"GLSA-201602-01","tags":["vendor-advisory","x_refsource_GENTOO"],"url":"https://security.gentoo.org/glsa/201602-01"}]}},"cveMetadata":{"assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","assignerShortName":"redhat","cveId":"CVE-2015-8743","datePublished":"2016-12-29T22:00:00.000Z","dateReserved":"2016-01-04T00:00:00.000Z","dateUpdated":"2024-08-06T08:29:21.247Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"},"nvd":{"publishedDate":"2016-12-29 22:59:00","lastModifiedDate":"2026-05-06 22:30:45","problem_types":["CWE-125","CWE-787","n/a"],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":1.8,"impactScore":5.2}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:P/I:P/A:N","baseScore":3.6,"accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"NONE"},"baseSeverity":"LOW","exploitabilityScore":3.9,"impactScore":4.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*","versionEndIncluding":"2.5.1","matchCriteriaId":"26A04769-0D4E-4B7B-B54C-C686FB69D85A"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*","matchCriteriaId":"16F59A04-14CF-49E2-9973-645477EA09DA"},{"vulnerable":true,"criteria":"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*","matchCriteriaId":"C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2015","CveId":"8743","Ordinal":"1","Title":"CVE-2015-8743","CVE":"CVE-2015-8743","Year":"2015"},"notes":[{"CveYear":"2015","CveId":"8743","Ordinal":"1","NoteData":"QEMU (aka Quick Emulator) built with the NE2000 device emulation support is vulnerable to an OOB r/w access issue. It could occur while performing 'ioport' r/w operations. A privileged (CAP_SYS_RAWIO) user/process could use this flaw to leak or corrupt QEMU memory bytes.","Type":"Description","Title":"CVE-2015-8743"},{"CveYear":"2015","CveId":"8743","Ordinal":"2","NoteData":"2016-12-29","Type":"Other","Title":"Published"},{"CveYear":"2015","CveId":"8743","Ordinal":"3","NoteData":"2017-11-03","Type":"Other","Title":"Modified"}]}}}