CVE-2017-15222: Buffer Overflow vulnerability in Ayukov NFTPD 2.0 and earlier allows remote attackers to execute arbitrary cod

Q: How do I fix CVE-2017-15222?

nftp: upgrade to newer than 2.0. Exact commands for each OS are on this page.

Q: Is CVE-2017-15222 being exploited?

CVE-2017-15222 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-2017-15222 affect?

CVE-2017-15222 affects nftp. Severity is critical (CVSS 9.8). Buffer Overflow vulnerability in Ayukov NFTPD 2.0 and earlier allows remote attackers to execute arbitrary code.

Q: How urgent is CVE-2017-15222?

Priority 69/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2017-15222 is a critical-severity flaw (CVSS 9.8) affecting nftp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer Overflow vulnerability in Ayukov NFTPD 2.0 and earlier allows remote attackers to execute arbitrary code.

Why this priority

Critical severity
EPSS top 1%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	60.3% (top 1%)
CISA exploited list	No
Weakness	CWE-120
Published	2017-10-24
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: nftp project

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

Am I affected?

Timeline

2017-10-24 17:29 UTCPublished CVE record published
2026-06-17 01:07 UTCUpdated Record last modified

nftp project nftp UPGRADE

Affected: <= 2.0

Fixed in: newer than 2.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade nftp

Note

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

Public exploits and detection

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

Exploit-DB: Ayukov NFTP FTP Client 2.0 - Remote Buffer Overflow (Metasploit)
Exploit-DB: Ayukov NFTP FTP Client < 2.0 - Remote Buffer Overflow
Exploit-DB: Ayukov NFTP FTP Client 2.0 - Buffer Overflow
Metasploit: Ayukov NFTP FTP Client Buffer Overflow

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-2017-15222?

nftp: upgrade to newer than 2.0. Exact commands for each OS are on this page.

Is CVE-2017-15222 being exploited?

CVE-2017-15222 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-2017-15222 affect?

CVE-2017-15222 affects nftp. Severity is critical (CVSS 9.8). Buffer Overflow vulnerability in Ayukov NFTPD 2.0 and earlier allows remote attackers to execute arbitrary code.

How urgent is CVE-2017-15222?

Priority 69/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

References

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