High 7.4Published Jun 5, 2014

CVE-2014-0224OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h does not properly restrict processing of ChangeCipherSpec messages, which allows man-in-the-middle attackers to trigger use of a z…

Updated under an hour ago (Nov 2, 2026, 12:23 AM ET)

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It affects openssl and 15 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h does not properly restrict processing of ChangeCipherSpec messages, which allows man-in-the-middle attackers to trigger use of a zero-length master key in certain OpenSSL-to-OpenSSL communications, and consequently hijack sessions or obtain sensitive information, via a crafted TLS handshake, aka the "CCS Injection" vulnerability.

CVSS: 7.4 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness (CWE): CWE-326
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

openssl openssl openssl:openssl	before 0.9.8za; from 1.0.0 before 1.0.0m; from 1.0.1 before 1.0.1h	NVD
redhat jboss_enterprise_application_platform redhat:jboss_enterprise_application_platform	5.2.0; 6.2.3	NVD
redhat jboss_enterprise_web_platform redhat:jboss_enterprise_web_platform	5.2.0	NVD
redhat jboss_enterprise_web_server redhat:jboss_enterprise_web_server	2.0.1	NVD
redhat storage redhat:storage	2.1	NVD
fedoraproject fedora fedoraproject:fedora	19; 20	NVD
opensuse opensuse opensuse:opensuse	13.1; 13.2	NVD
redhat enterprise_linux redhat:enterprise_linux	4; 5; 6.0	NVD
filezilla-project filezilla_server filezilla-project:filezilla_server	before 0.9.45	NVD
siemens application_processing_engine_firmware siemens:application_processing_engine_firmware	before 2.0.2	NVD
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References

References

http://aix.software.ibm.com/aix/efixes/security/openssl_advisory9.asc	third-party-advisory
http://ccsinjection.lepidum.co.jp	third-party-advisory
http://dev.mysql.com/doc/relnotes/workbench/en/wb-news-6-1-7.html	third-party-advisory
http://esupport.trendmicro.com/solution/en-US/1103813.aspx	third-party-advisory
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10629	not-applicable
http://kb.juniper.net/InfoCenter/index?page=content&id=KB29195	not-applicable
http://kb.juniper.net/InfoCenter/index?page=content&id=KB29217	third-party-advisory
http://linux.oracle.com/errata/ELSA-2014-1053.html	third-party-advisory
http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136470.html	third-party-advisory
http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136473.html	third-party-advisory
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.