CVE-2020-37069: Konica Minolta FTP Utility 1.0 contains a buffer overflow vulnerability in the NLST command that allows attack

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2020-37069 is a critical-severity flaw (CVSS 9.8) affecting ftp utility. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Konica Minolta FTP Utility 1.0 contains a buffer overflow vulnerability in the NLST command that allows attackers to overwrite system registers. Attackers can send an oversized buffer of 1500 'A' characters to crash the FTP server and potentially execute unauthorized code.

Why this priority

Critical severity
Public exploit reference
CISA SSVC: automatable with total technical impact
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	0.7% (top 48%)
CISA exploited list	No
Weakness	CWE-120
Published	2026-02-03
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: konicaminolta

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

Am I affected?

Timeline

2026-02-03 22:16 UTCPublished CVE record published
2026-06-17 03:16 UTCUpdated Record last modified

konicaminolta ftp utility DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy ftp-utility || rpm -q ftp-utility || ftp-utility --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison ftp-utility sudo apt install ftp-utility=<VERSION_BEFORE_1.0> sudo apt-mark hold ftp-utility

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

dnf --showduplicates list ftp-utility sudo dnf downgrade ftp-utility-<VERSION_BEFORE_1.0> sudo dnf versionlock add ftp-utility

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.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · proftpd · FIXED · 1.3.9e-2.fc46 · FEDORA-2026-fcb0a25c2f · source

sudo dnf upgrade --advisory=FEDORA-2026-fcb0a25c2f

Public exploits and detection

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

Write-up: www.exploit-db.com/exploits/48502

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-2020-37069?

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

Is CVE-2020-37069 being exploited?

CVE-2020-37069 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-2020-37069 affect?

CVE-2020-37069 affects ftp utility. Severity is critical (CVSS 9.8). Konica Minolta FTP Utility 1.0 contains a buffer overflow vulnerability in the NLST command that allows attackers to overwrite system registers. Attackers can send an oversized buffer of 1500 'A' characters to crash the FTP server and poten

How urgent is CVE-2020-37069?

Priority 60/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Related CVEs

CVE-2020-37068 CRITICAL 9.8 DOWNGRADE Konica Minolta FTP Utility 1.0 contains a buffer overflow vulnerability in the LIST command that allows attack

References

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