CVE-2014-0160: OpenSSL Information Disclosure Vulnerability

Q: How do I fix CVE-2014-0160?

openssl: upgrade to 1.0.1g; filezilla server: upgrade to 0.9.44; application processing engine firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2014-0160 being exploited?

Yes. CVE-2014-0160 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

Q: What does CVE-2014-0160 affect?

CVE-2014-0160 affects openssl, filezilla server, application processing engine firmware. Severity is high (CVSS 7.5). 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

Q: How urgent is CVE-2014-0160?

Priority 91/100. High severity; EPSS top 1%: very likely to be exploited; Exploited in the wild (CISA KEV); Public exploit reference; Remotely exploitable, no login, no user action; On your watchlist

Patch now

HIGH 7.5EXPLOITEDREMOTEWATCHLISTUPGRADEUPGRADEMITIGATE

CVE-2014-0160 is a high-severity flaw (CVSS 7.5) affecting openssl, filezilla server, application processing engine firmware, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
EPSS top 1%: very likely to be exploited
Exploited in the wild (CISA KEV)
Public exploit reference
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	100.0% (top 1%)
CISA exploited list	Yes, fix due 2022-05-25
Weakness	CWE-125
Published	2014-04-07
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · Vendor: filezilla-project · openssl · siemens

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2014-04-07 22:55 UTCPublished CVE record published
2022-05-04Exploited Added to the CISA Known Exploited Vulnerabilities list
2022-05-25Deadline CISA due date for US federal agencies to patch
2026-06-17 00:02 UTCUpdated Record last modified

openssl openssl UPGRADE

Affected: >= 1.0.1 and < 1.0.1g

Fixed in: 1.0.1g

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy openssl || rpm -q openssl || openssl --version

2. UPGRADE to 1.0.1g (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade openssl

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade openssl

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

filezilla-project filezilla server UPGRADE

Affected: < 0.9.44

Fixed in: 0.9.44

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy filezilla-server || rpm -q filezilla-server || filezilla-server --version

2. UPGRADE to 0.9.44 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade filezilla-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade filezilla-server

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

siemens application processing engine firmware MITIGATE

Affected: 2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

siemens cp 1543-1 firmware MITIGATE

Affected: 1.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

siemens simatic s7-1500 firmware MITIGATE

Affected: 1.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.5

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

siemens simatic s7-1500t firmware MITIGATE

Affected: 1.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.5

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · perl-Net-IDN-Encode · FIXED · 2.600-1.fc46 · FEDORA-2026-84eff0ea64 · source

sudo dnf upgrade --advisory=FEDORA-2026-84eff0ea64

Fedora ELN · libXISF · FIXED · 0.2.15-2.eln159 · FEDORA-2026-b9e2d1bda0 · source

sudo dnf upgrade --advisory=FEDORA-2026-b9e2d1bda0

Debian 12 · openssl · FIXED · 1.0.1g-1

sudo apt update && sudo apt install --only-upgrade openssl dpkg --compare-versions "$(dpkg-query -W -f='${Version}' openssl)" ge "1.0.1g-1" && echo PATCHED || echo STILL-VULNERABLE

Debian 13 · openssl · FIXED · 1.0.1g-1

sudo apt update && sudo apt install --only-upgrade openssl dpkg --compare-versions "$(dpkg-query -W -f='${Version}' openssl)" ge "1.0.1g-1" && echo PATCHED || echo STILL-VULNERABLE

RHEL 6 · openssl · FIXED · openssl-1.0.1e-16.el6_5.7

sudo dnf upgrade --advisory=RHSA-2014:0376 rpm -q openssl

RHEL 5 · openssl · NOT AFFECTED

RHEL 5 · openssl097a · NOT AFFECTED

RHEL 6 · openssl098e · NOT AFFECTED

RHEL 7 · openssl · NOT AFFECTED

Amazon Linux 1 · see advisory · FIXED · ALAS-2014-320 · source

sudo yum update --advisory=ALAS-2014-320

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: FiloSottile/Heartbleed (2369 stars)
GitHub PoC: musalbas/heartbleed-masstest (571 stars)
Exploit-DB: OpenSSL 1.0.1f TLS Heartbeat Extension - 'Heartbleed' Memory Disclosure (Multiple SSL/TLS Versions)
Exploit-DB: OpenSSL TLS Heartbeat Extension - 'Heartbleed' Information Leak (1)
Exploit-DB: OpenSSL TLS Heartbeat Extension - 'Heartbleed' Information Leak (2) (DTLS Support)
Exploit-DB: OpenSSL TLS Heartbeat Extension - 'Heartbleed' Memory Disclosure
Metasploit: OpenSSL Heartbeat (Heartbleed) Information Leak
Metasploit: OpenSSL Heartbeat (Heartbleed) Client Memory Exposure

Verify at the official source NVD · CVE Program · CISA KEV catalog · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2014-0160?

openssl: upgrade to 1.0.1g; filezilla server: upgrade to 0.9.44; application processing engine firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2014-0160 being exploited?

Yes. CVE-2014-0160 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2014-0160 affect?

CVE-2014-0160 affects openssl, filezilla server, application processing engine firmware. Severity is high (CVSS 7.5). 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

How urgent is CVE-2014-0160?

Priority 91/100. High severity; EPSS top 1%: very likely to be exploited; Exploited in the wild (CISA KEV); Public exploit reference; Remotely exploitable, no login, no user action; On your watchlist

Software pages

OpenSSL vulnerabilities · Siemens vulnerabilities · FileZilla vulnerabilities

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References

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