CVE-2014-0160
Out-of-bounds Read
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Description
The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly handle Heartbeat Extension packets, which allows remote attackers to obtain sensitive information from process memory via crafted packets that trigger a buffer over-read, as demonstrated by reading private keys, related to d1_both.c and t1_lib.c, aka the Heartbleed bug.
Official description from the CVE record, published by redhat. Copyright © 1999-2026 The MITRE Corporation. See /security/cve/legal for the CVE license. View the record on cve.org
Key data
CVSS 3.1 High 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector: Network
The vulnerable component can be reached over a network, possibly from the Internet.
Attack complexity: Low
No special conditions are needed. The attack can be repeated at will.
Privileges required: None
No account or privileges are needed.
User interaction: None
No action from any user is needed.
Scope: Unchanged
The impact stays within the vulnerable component.
Confidentiality impact: High
Serious or total effect on the secrecy of data.
Integrity impact: None
No effect on the trustworthiness of data.
Availability impact: None
No effect on availability.
| Metric | Value | What it means |
|---|---|---|
| Attack vector | Network | The vulnerable component can be reached over a network, possibly from the Internet. |
| Attack complexity | Low | No special conditions are needed. The attack can be repeated at will. |
| Privileges required | None | No account or privileges are needed. |
| User interaction | None | No action from any user is needed. |
| Scope | Unchanged | The impact stays within the vulnerable component. |
| Confidentiality impact | High | Serious or total effect on the secrecy of data. |
| Integrity impact | None | No effect on the trustworthiness of data. |
| Availability impact | None | No effect on availability. |
CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at first.org/cvss.
EPSS
- Score
- 0.99999 (99.99% probability)
- Percentile
- 99.99%
- Scores of
- Nov 10, 2026
- Model
- v2026.06.15
CISA Known Exploited Vulnerabilities
- Name in the catalog
- OpenSSL Information Disclosure Vulnerability
- Added to the catalog
- May 4, 2022
- Federal due date
- May 25, 2022
CISA assessment as of Feb 7, 2025
- Exploitation
- Recorded by CISA as active
- Automatable
- yes
- Technical impact
- partial
Weakness (CWE)
- CWE-125Out-of-bounds Read
References
- support.f5.com/kb/en-us/solutions/public/15000/100/sol15159…
- 1030077 (securitytracker.com)vdb-entry
- 20140408 heartbleed OpenSSL bug CVE-2014-0160 (seclists.org)mailing-list
- getchef.com/blog/2014/04/09/chef-server-heartbleed-cve-2014…
- DSA-2896 (debian.org)vendor-advisory
- HPSBGN03008 (marc.info)vendor-advisory
- HPSBMU03024 (marc.info)vendor-advisory
- RHSA-2014:0396 (rhn.redhat.com)vendor-advisory
- HPSBHF03021 (marc.info)vendor-advisory
- HPSBHF03136 (marc.info)vendor-advisory
- VU#720951 (kb.cert.org)third-party-advisory
- splunk.com/view/SP-CAAAMB3
- HPSBMU03033 (marc.info)vendor-advisory
- websense.com/support/article/kbarticle/Vulnerabilities-reso…
- apcmedia.com/salestools/SJHN-7RKGNM/SJHN-7RKGNM_R4_EN.pdf
- HPSBGN03011 (marc.info)vendor-advisory
- www-01.ibm.com/support/docview.wss?uid=swg21670161
- vmware.com/security/advisories/VMSA-2014-0012.html
- openSUSE-SU-2014:0492 (lists.opensuse.org)vendor-advisory
- SSRT101846 (marc.info)vendor-advisory
- 20140409 Re: heartbleed OpenSSL bug CVE-2014-0160 (seclists.org)mailing-list
- HPSBMU03037 (marc.info)vendor-advisory
- 1030080 (securitytracker.com)vdb-entry
- 57836 (secunia.com)third-party-advisory
- www-01.ibm.com/support/docview.wss?uid=isg400001843
- HPSBMU03012 (marc.info)vendor-advisory
- HPSBST03001 (marc.info)vendor-advisory
- 66690 (securityfocus.com)vdb-entry
- innominate.com/data/downloads/manuals/mdm_1.5.2.1_Release_N…
- filezilla-project.org/versions.php?type=server
- HPSBMU03023 (marc.info)vendor-advisory
- 57483 (secunia.com)third-party-advisory
- 20140409 OpenSSL Heartbeat Extension Vulnerability in Multiple Cisco Products (tools.cisco.com)vendor-advisory
- kerio.com/support/kerio-control/release-history
- advisories.mageia.org/MGASA-2014-0165.html
- blackberry.com/btsc/KB35882
- HPSBMU03044 (marc.info)vendor-advisory
- HPSBMU03030 (marc.info)vendor-advisory
- 1030081 (securitytracker.com)vdb-entry
- FEDORA-2014-4879 (lists.fedoraproject.org)vendor-advisory
- 20141205 NEW: VMSA-2014-0012 - VMware vSphere product updates address security vulnerabilities (securityfocus.com)mailing-list
- FEDORA-2014-4910 (lists.fedoraproject.org)vendor-advisory
- bugzilla.redhat.com/show_bug.cgi?id=1084875
- FEDORA-2014-9308 (lists.fedoraproject.org)vendor-advisory
- www-01.ibm.com/support/docview.wss?uid=isg400001841
- HPSBMU03013 (marc.info)vendor-advisory
- 1030079 (securitytracker.com)vdb-entry
- RHSA-2014:0377 (rhn.redhat.com)vendor-advisory
- HPSBMU02995 (marc.info)vendor-advisory
- HPSBPI03031 (marc.info)vendor-advisory
- code.google.com/p/mod-spdy/issues/detail?id=85
- HPSBMU02999 (marc.info)vendor-advisory
- HPSBGN03010 (marc.info)vendor-advisory
- HPSBMU03029 (marc.info)vendor-advisory
- getchef.com/blog/2014/04/09/chef-server-11-0-12-release
- heartbleed.com
- HPSBMU03018 (marc.info)vendor-advisory
- download.schneider-electric.com/files?p_Doc_Ref=SEVD%202014…
- HPSBMU03040 (marc.info)vendor-advisory
- cogentdatahub.com/ReleaseNotes.html
- HPSBMU03025 (marc.info)vendor-advisory
- HPSBST03016 (marc.info)vendor-advisory
- HPSBMU03028 (marc.info)vendor-advisory
- HPSBMU03009 (marc.info)vendor-advisory
- f-secure.com/en/web/labs_global/fsc-2014-1
- TA14-098A (us-cert.gov)third-party-advisory
- 57347 (secunia.com)third-party-advisory
- [syslog-ng-announce] 20140411 syslog-ng Premium Edition 5 LTS (5.0.4a) has been released (lists.balabit.hu)mailing-list
- 20140411 MRI Rubies may contain statically linked, vulnerable OpenSSL (seclists.org)mailing-list
- blog.torproject.org/blog/openssl-bug-cve-2014-0160
- oracle.com/technetwork/topics/security/cpujul2014-1972956.h…
- oracle.com/technetwork/topics/security/opensslheartbleedcve…
- support.f5.com/kb/en-us/solutions/public/15000/100/sol15159…
- git.openssl.org/gitweb/?p=openssl.git%3Ba=commit%3Bh=96db90…
- HPSBST03000 (h20566.www2.hp.com)vendor-advisory
- 20141205 NEW: VMSA-2014-0012 - VMware vSphere product updates address security vulnerabilities (seclists.org)mailing-list
- HPSBST03004 (marc.info)vendor-advisory
- USN-2165-1 (ubuntu.com)vendor-advisory
- RHSA-2014:0378 (rhn.redhat.com)vendor-advisory
- HPSBMU02997 (marc.info)vendor-advisory
- SUSE-SA:2014:002 (lists.opensuse.org)vendor-advisory
- 32764 (exploit-db.com)exploit
- HPSBMU02994 (marc.info)vendor-advisory
- symantec.com/security_response/securityupdates/detail.jsp?f…
- HPSBMU03022 (marc.info)vendor-advisory
- HPSBST03027 (marc.info)vendor-advisory
- HPSBMU03019 (marc.info)vendor-advisory
- HPSBMU03062 (marc.info)vendor-advisory
- 20140408 Re: heartbleed OpenSSL bug CVE-2014-0160 (seclists.org)mailing-list
- 1030078 (securitytracker.com)vdb-entry
- 59243 (secunia.com)third-party-advisory
- www-01.ibm.com/support/docview.wss?uid=ssg1S1004661
- HPSBMU03020 (marc.info)vendor-advisory
- HPSBST03015 (marc.info)vendor-advisory
- RHSA-2014:0376 (rhn.redhat.com)vendor-advisory
- HPSBPI03014 (marc.info)vendor-advisory
- MDVSA-2015:062 (mandriva.com)vendor-advisory
- cert.fi/en/reports/2014/vulnerability788210.html
- 57721 (secunia.com)third-party-advisory
- 57968 (secunia.com)third-party-advisory
and 28 more in the record on cve.org
Timeline
- ID reserved
- Record published
- Added to CISA KEV
- Record last updated
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About CubePath
Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:19 UTC. Sources and licenses