CVE-2014-2845: Cyberduck before 4.4.4 on Windows does not properly validate X.509 certificate chains, which allows man-in-the

Q: How do I fix CVE-2014-2845?

cyberduck: upgrade to 4.4.4. Exact commands for each OS are on this page.

Q: Is CVE-2014-2845 being exploited?

CVE-2014-2845 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2014-2845 affect?

CVE-2014-2845 affects cyberduck. Severity is medium (CVSS 5.9). Cyberduck before 4.4.4 on Windows does not properly validate X.509 certificate chains, which allows man-in-the-middle attackers to spoof FTP-SSL servers via a certificate issued by an arbitrary root Certification Authority.

Q: How urgent is CVE-2014-2845?

Priority 46/100. Public exploit reference; Remotely exploitable, no login, no user action

This week

MEDIUM 5.9REMOTEUPGRADE

CVE-2014-2845 is a medium-severity flaw (CVSS 5.9) affecting cyberduck. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cyberduck before 4.4.4 on Windows does not properly validate X.509 certificate chains, which allows man-in-the-middle attackers to spoof FTP-SSL servers via a certificate issued by an arbitrary root Certification Authority.

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 39%)
CISA exploited list	No
Weakness	CWE-295
Published	2017-11-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: cyberduck

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

Am I affected?

Timeline

2017-11-15 18:29 UTCPublished CVE record published
2026-06-17 00:07 UTCUpdated Record last modified

cyberduck cyberduck UPGRADE

Affected: < 4.4.4

Fixed in: 4.4.4

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 4.4.4 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade cyberduck

Note

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

Verify at the official source NVD · CVE Program · 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-2014-2845?

cyberduck: upgrade to 4.4.4. Exact commands for each OS are on this page.

Is CVE-2014-2845 being exploited?

CVE-2014-2845 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2014-2845 affect?

CVE-2014-2845 affects cyberduck. Severity is medium (CVSS 5.9). Cyberduck before 4.4.4 on Windows does not properly validate X.509 certificate chains, which allows man-in-the-middle attackers to spoof FTP-SSL servers via a certificate issued by an arbitrary root Certification Authority.

How urgent is CVE-2014-2845?

Priority 46/100. Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Windows vulnerabilities

References

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