--- id: CVE-2015-0204 title: >- The ssl3_get_key_exchange function in s3_clnt.c in OpenSSL before 0.9.8zd, 1.0.0 before 1.0.0p, and 1.0.1 before 1.0.1k allows remote SSL servers to conduct RSA-to-EXPORT_RSA downgrade attacks and facilitate brute-force decryption by off… summary: >- The ssl3_get_key_exchange function in s3_clnt.c in OpenSSL before 0.9.8zd, 1.0.0 before 1.0.0p, and 1.0.1 before 1.0.1k allows remote SSL servers to conduct RSA-to-EXPORT_RSA downgrade attacks and facilitate brute-force decryption by off… severity: medium cvss: 4.3 cvssVector: 'AV:N/AC:M/Au:N/C:N/I:P/A:N' cwe: - CWE-310 vendor: openssl product: openssl affected: - openssl <= 0.9.8zc - openssl = 1.0.0a - openssl = 1.0.0b - openssl = 1.0.0c - openssl = 1.0.0d - openssl = 1.0.0e - openssl = 1.0.0f - openssl = 1.0.0g - openssl = 1.0.0h - openssl = 1.0.0i - openssl = 1.0.0j - openssl = 1.0.0k - openssl = 1.0.0l - openssl = 1.0.0m - openssl = 1.0.0n - openssl = 1.0.0o - openssl = 1.0.1a - openssl = 1.0.1b - openssl = 1.0.1c - openssl = 1.0.1d - openssl = 1.0.1e - openssl = 1.0.1f - openssl = 1.0.1g - openssl = 1.0.1h - openssl = 1.0.1i - openssl = 1.0.1j published: '2015-01-09' updated: '2026-10-14' sourceUpdated: '2026-10-14T22:17:01.677' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2015-0204' references: - url: 'http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10679' label: secalert@redhat.com - url: 'http://lists.apple.com/archives/security-announce/2015/Apr/msg00001.html' label: secalert@redhat.com - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-01/msg00021.html' label: secalert@redhat.com - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00027.html' label: secalert@redhat.com - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00026.html' label: secalert@redhat.com - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00014.html' label: secalert@redhat.com - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00015.html' label: secalert@redhat.com - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00022.html' label: secalert@redhat.com - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00031.html' label: secalert@redhat.com - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00000.html' label: secalert@redhat.com - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00001.html' label: secalert@redhat.com - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00003.html' label: secalert@redhat.com - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00004.html' label: secalert@redhat.com - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00006.html' label: secalert@redhat.com - url: 'http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00005.html' label: secalert@redhat.com - url: 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00011.html' label: secalert@redhat.com - url: 'http://marc.info/?l=bugtraq&m=142496179803395&w=2' label: secalert@redhat.com - url: 'http://marc.info/?l=bugtraq&m=142496289803847&w=2' label: secalert@redhat.com - url: 'http://marc.info/?l=bugtraq&m=142720981827617&w=2' label: secalert@redhat.com - url: 'http://marc.info/?l=bugtraq&m=142721102728110&w=2' label: secalert@redhat.com - url: 'http://marc.info/?l=bugtraq&m=142895206924048&w=2' label: secalert@redhat.com - url: 'http://marc.info/?l=bugtraq&m=143213830203296&w=2' label: secalert@redhat.com - url: 'http://marc.info/?l=bugtraq&m=143748090628601&w=2' label: secalert@redhat.com - url: 'http://marc.info/?l=bugtraq&m=144043644216842&w=2' label: secalert@redhat.com - url: 'http://marc.info/?l=bugtraq&m=144050155601375&w=2' label: secalert@redhat.com - url: 'http://marc.info/?l=bugtraq&m=144050205101530&w=2' label: secalert@redhat.com - url: 'http://marc.info/?l=bugtraq&m=144050254401665&w=2' label: secalert@redhat.com - url: 'http://marc.info/?l=bugtraq&m=144050297101809&w=2' label: secalert@redhat.com - url: 'http://rhn.redhat.com/errata/RHSA-2015-0066.html' label: secalert@redhat.com - url: 'http://rhn.redhat.com/errata/RHSA-2015-0800.html' label: secalert@redhat.com - url: 'http://rhn.redhat.com/errata/RHSA-2015-0849.html' label: secalert@redhat.com - url: 'http://rhn.redhat.com/errata/RHSA-2016-1650.html' label: secalert@redhat.com - url: 'http://support.novell.com/security/cve/CVE-2015-0204.html' label: secalert@redhat.com - url: >- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150310-ssl label: secalert@redhat.com - url: 'http://www-01.ibm.com/support/docview.wss?uid=swg21883640' label: secalert@redhat.com - url: 'http://www-304.ibm.com/support/docview.wss?uid=swg21960769' label: secalert@redhat.com - url: 'http://www.debian.org/security/2015/dsa-3125' label: secalert@redhat.com - url: 'http://www.mandriva.com/security/advisories?name=MDVSA-2015:019' label: secalert@redhat.com - url: 'http://www.mandriva.com/security/advisories?name=MDVSA-2015:062' label: secalert@redhat.com - url: 'http://www.mandriva.com/security/advisories?name=MDVSA-2015:063' label: secalert@redhat.com - url: >- http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html label: secalert@redhat.com - url: >- http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html label: secalert@redhat.com - url: >- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html label: secalert@redhat.com - url: >- http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html label: secalert@redhat.com - url: >- http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html label: secalert@redhat.com - url: 'http://www.oracle.com/technetwork/topics/security/cpuapr2015-2365600.html' label: secalert@redhat.com - url: 'http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html' label: secalert@redhat.com - url: 'http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html' label: secalert@redhat.com - url: 'http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html' label: secalert@redhat.com - url: 'http://www.securityfocus.com/bid/71936' label: secalert@redhat.com - url: 'http://www.securityfocus.com/bid/91787' label: secalert@redhat.com - url: 'http://www.securitytracker.com/id/1033378' label: secalert@redhat.com - url: 'https://bto.bluecoat.com/security-advisory/sa88' label: secalert@redhat.com - url: 'https://bto.bluecoat.com/security-advisory/sa91' label: secalert@redhat.com - url: 'https://exchange.xforce.ibmcloud.com/vulnerabilities/99707' label: secalert@redhat.com - url: 'https://freakattack.com/' label: secalert@redhat.com - url: >- https://github.com/openssl/openssl/commit/ce325c60c74b0fa784f5872404b722e120e5cab0 label: secalert@redhat.com - url: >- https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04773241 label: secalert@redhat.com - url: 'https://kc.mcafee.com/corporate/index?page=content&id=SB10102' label: secalert@redhat.com - url: 'https://kc.mcafee.com/corporate/index?page=content&id=SB10108' label: secalert@redhat.com - url: 'https://kc.mcafee.com/corporate/index?page=content&id=SB10110' label: secalert@redhat.com - url: 'https://security.gentoo.org/glsa/201503-11' label: secalert@redhat.com - url: 'https://support.apple.com/HT204659' label: secalert@redhat.com - url: 'https://support.citrix.com/article/CTX216642' label: secalert@redhat.com - url: 'https://www.openssl.org/news/secadv_20150108.txt' label: secalert@redhat.com - url: 'https://www.openssl.org/news/secadv_20150319.txt' label: secalert@redhat.com - url: 'http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10679' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.apple.com/archives/security-announce/2015/Apr/msg00001.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-01/msg00021.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00027.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00026.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00014.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00015.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00022.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00031.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00000.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00001.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00003.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00004.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00006.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00005.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00011.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://marc.info/?l=bugtraq&m=142496179803395&w=2' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://marc.info/?l=bugtraq&m=142496289803847&w=2' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://marc.info/?l=bugtraq&m=142720981827617&w=2' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://marc.info/?l=bugtraq&m=142721102728110&w=2' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://marc.info/?l=bugtraq&m=142895206924048&w=2' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://marc.info/?l=bugtraq&m=143213830203296&w=2' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://marc.info/?l=bugtraq&m=143748090628601&w=2' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://marc.info/?l=bugtraq&m=144043644216842&w=2' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://marc.info/?l=bugtraq&m=144050155601375&w=2' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://marc.info/?l=bugtraq&m=144050205101530&w=2' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://marc.info/?l=bugtraq&m=144050254401665&w=2' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://marc.info/?l=bugtraq&m=144050297101809&w=2' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://rhn.redhat.com/errata/RHSA-2015-0066.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://rhn.redhat.com/errata/RHSA-2015-0800.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://rhn.redhat.com/errata/RHSA-2015-0849.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://rhn.redhat.com/errata/RHSA-2016-1650.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://support.novell.com/security/cve/CVE-2015-0204.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150310-ssl label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www-01.ibm.com/support/docview.wss?uid=swg21883640' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www-304.ibm.com/support/docview.wss?uid=swg21960769' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.debian.org/security/2015/dsa-3125' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.mandriva.com/security/advisories?name=MDVSA-2015:019' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.mandriva.com/security/advisories?name=MDVSA-2015:062' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.mandriva.com/security/advisories?name=MDVSA-2015:063' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html label: af854a3a-2127-422b-91ae-364da2661108 - url: >- http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html label: af854a3a-2127-422b-91ae-364da2661108 - url: >- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html label: af854a3a-2127-422b-91ae-364da2661108 - url: >- http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html label: af854a3a-2127-422b-91ae-364da2661108 - url: >- http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.oracle.com/technetwork/topics/security/cpuapr2015-2365600.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.securityfocus.com/bid/71936' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.securityfocus.com/bid/91787' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://www.securitytracker.com/id/1033378' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://bto.bluecoat.com/security-advisory/sa88' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://bto.bluecoat.com/security-advisory/sa91' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://exchange.xforce.ibmcloud.com/vulnerabilities/99707' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://freakattack.com/' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://github.com/openssl/openssl/commit/ce325c60c74b0fa784f5872404b722e120e5cab0 label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04773241 label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://kc.mcafee.com/corporate/index?page=content&id=SB10102' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://kc.mcafee.com/corporate/index?page=content&id=SB10108' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://kc.mcafee.com/corporate/index?page=content&id=SB10110' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://security.gentoo.org/glsa/201503-11' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://support.apple.com/HT204659' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://support.citrix.com/article/CTX216642' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.openssl.org/news/secadv_20150108.txt' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.openssl.org/news/secadv_20150319.txt' label: af854a3a-2127-422b-91ae-364da2661108 tags: - nvd - exploit-available - cve.org epss: 0.98685 epssPercentile: 0.99924 exploits: github: 5 githubRepos: - 'https://github.com/felmoltor/FreakVulnChecker' - 'https://github.com/scottjpack/Freak-Scanner' - 'https://github.com/AbhishekGhosh/FREAK-Attack-CVE-2015-0204-Testing-Script' checkedAt: '2026-10-26T21:40:19.744Z' exploitAvailable: true ingestedAt: '2026-10-14T23:00:01.981Z' ssvc: exploitation: none automatable: 'no' technicalImpact: partial timestamp: '2026-10-14T21:04:56.163876Z' --- ## Overview The ssl3_get_key_exchange function in s3_clnt.c in OpenSSL before 0.9.8zd, 1.0.0 before 1.0.0p, and 1.0.1 before 1.0.1k allows remote SSL servers to conduct RSA-to-EXPORT_RSA downgrade attacks and facilitate brute-force decryption by offering a weak ephemeral RSA key in a noncompliant role, related to the "FREAK" issue. NOTE: the scope of this CVE is only client code based on OpenSSL, not EXPORT_RSA issues associated with servers or other TLS implementations. ## Affected - `openssl <= 0.9.8zc` - `openssl = 1.0.0a` - `openssl = 1.0.0b` - `openssl = 1.0.0c` - `openssl = 1.0.0d` - `openssl = 1.0.0e` - `openssl = 1.0.0f` - `openssl = 1.0.0g` - `openssl = 1.0.0h` - `openssl = 1.0.0i` - `openssl = 1.0.0j` - `openssl = 1.0.0k` - `openssl = 1.0.0l` - `openssl = 1.0.0m` - `openssl = 1.0.0n` - `openssl = 1.0.0o` - `openssl = 1.0.1a` - `openssl = 1.0.1b` - `openssl = 1.0.1c` - `openssl = 1.0.1d` - `openssl = 1.0.1e` - `openssl = 1.0.1f` - `openssl = 1.0.1g` - `openssl = 1.0.1h` - `openssl = 1.0.1i` - `openssl = 1.0.1j` ## Remediation Refer to the linked advisories for vendor-supplied fixes and affected version ranges.