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CISA KEV · ACTIVELY EXPLOITED
HIGH severity

CVE-2014-0160 — Red Hat

HIGH

CVE-2014-0160 is a high-severity (CVSS 7.5) Out-of-bounds Read vulnerability. It is in CISA's Known Exploited Vulnerabilities catalog (added 2022-05-04) — treat it as actively exploited and patch now. No vendor fix is recorded yet; mitigation options are listed below.

Published
Updated
Affected
28 products
Patched
See advisory
Exploits
59 known
Exploitation data as of Oct 26, 2026 · OSV.dev, NVD, CISA KEV, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

  • Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2022-05-04. Federal agencies were required to remediate by 2022-05-25.
  • CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.

Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2014-0160.

EPSS Exploitation Probability

via FIRST.org ↗
100.0%probability of exploitation in next 30 days
Very High Risk0.00%
Lower risk than most CVEs100th percentile — riskier than 100% of all scored CVEsHighest risk
92.8%95.2%97.6%100.0%94.5%100.0%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2014-0160 by exploitation likelihood (EPSS) against impact (CVSS). In the shaded patch-first corner (EPSS 50%+, CVSS 7.0+).

Where this sits among everything scored

Of 396,257 CVEs with a current EPSS score, this one falls in the ≥ 90% band (highlighted). Counts from FIRST.org, log-scaled.

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.

Affected Products

28 products · 47 configurations
Application
symantec messaging gatewaybroadcom
2 versions
10.6.010.6.1
OS
ubuntu linuxcanonical
3 versions
12.0412.1013.10
OS
debian linuxdebian
3 versions
6.07.08.0
OS
fedorafedoraproject
2 versions
1920
Application
filezilla serverfilezilla-project
< 0.9.44
range
OS
v60 firmwareintellian
2 versions
1.151.25
Exploits & PoCs
59

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-32764remotemultiple✓ Verified

OpenSSL 1.0.1f TLS Heartbeat Extension - 'Heartbleed' Memory Disclosure (Multiple SSL/TLS Versions)

by Fitzl Csaba · Apr 9, 2014

Exploit-DB Source
EDB-32791remotemultiple✓ Verified

OpenSSL TLS Heartbeat Extension - 'Heartbleed' Information Leak (1)

by prdelka · Apr 10, 2014

Exploit-DB Source
EDB-32745remotemultiple✓ Verified

OpenSSL TLS Heartbeat Extension - 'Heartbleed' Memory Disclosure

by Jared Stafford · Apr 8, 2014

Exploit-DB Source
EDB-32998remotemultiple✓ Verified

OpenSSL TLS Heartbeat Extension - 'Heartbleed' Information Leak (2) (DTLS Support)

by Ayman Sagy · Apr 24, 2014

Exploit-DB Source

Detection & mitigation playbook

Vulnerability

  1. Detect

    Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).

  2. Remediation status

    No fixed release is recorded for CVE-2014-0160 yet. Track the upstream advisory, and apply the exposure-reduction steps below in the meantime.

  3. Mitigate without a patch

    Constrain what reaches the vulnerable code: limit the size and shape of untrusted input, isolate the affected component in a sandboxed or least-privileged process, and enable the platform's memory-safety mitigations (ASLR, stack protector, hardened allocator) so an out-of-bounds access is more likely to fail closed than to be exploitable.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatImportant

This issue did not affect the versions of openssl as shipped with Red Hat Enterprise Linux 5, Red Hat Enterprise Linux 6.4 and earlier, Red Hat JBoss Enterprise Application Platform 5 and 6, and Red Hat JBoss Web Server 1 and 2. This issue does affect Red Hat Enterprise Linux 7 Beta, Red Hat Enterprise Linux 6.5, Red…

ProductFixed inAdvisory
Red Hat Enterprise Linux 6openssl-0:1.0.1e-16.el6_5.7RHSA-2014:0376
Red Hat Storage 2.1openssl-0:1.0.1e-16.el6_5.7RHSA-2014:0377
RHEV 3.X Hypervisor and Agents for RHEL-6rhev-hypervisor6-0:6.5-20140407.0.el6evRHSA-2014:0378
RHEV 3.X Hypervisor and Agents for RHEL-6rhev-hypervisor6-0:6.5-20140118.1.3.2.el6_5RHSA-2014:0396
RHEV Manager version 3.3spice-client-msi-0:3.3-12RHSA-2014:0416

Frequently Asked Questions

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.
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CVE-2014-0160: Red Hat Info Disclosure (High 7.5, KEV)