CVE-2017-18047: Buffer Overflow in the FTP client in LabF nfsAxe 3.7 allows remote FTP servers to execute arbitrary code via a

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2017-18047 is a critical-severity flaw (CVSS 9.8) affecting nfsaxe. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer Overflow in the FTP client in LabF nfsAxe 3.7 allows remote FTP servers to execute arbitrary code via a long reply.

Why this priority

Critical severity
EPSS top 3%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	19.7% (top 3%)
CISA exploited list	No
Weakness	CWE-119
Published	2018-01-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: labf

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

Am I affected?

Timeline

2018-01-22 04:29 UTCPublished CVE record published
2026-06-17 01:12 UTCUpdated Record last modified

labf nfsaxe DOWNGRADE

Affected: 3.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.7

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.7 (Debian / Ubuntu)

apt-cache madison nfsaxe sudo apt install nfsaxe=<VERSION_BEFORE_3.7> sudo apt-mark hold nfsaxe

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list nfsaxe sudo dnf downgrade nfsaxe-<VERSION_BEFORE_3.7> sudo dnf versionlock add nfsaxe

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

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

Metasploit: LabF nfsAxe 3.7 FTP Client Stack 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-2017-18047?

nfsaxe: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2017-18047 being exploited?

CVE-2017-18047 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-2017-18047 affect?

CVE-2017-18047 affects nfsaxe. Severity is critical (CVSS 9.8). Buffer Overflow in the FTP client in LabF nfsAxe 3.7 allows remote FTP servers to execute arbitrary code via a long reply.

How urgent is CVE-2017-18047?

Priority 69/100. Critical severity; EPSS top 3%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2017-14742 CRITICAL 9.8 DOWNGRADE Buffer overflow in LabF nfsAxe FTP client 3.7 allows an attacker to execute code remotely.

References

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