CVE-2019-19383: freeFTPd 1.0.8 has a Post-Authentication Buffer Overflow via a crafted SIZE command (this is exploitable even

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HIGH 8.8DOWNGRADE

CVE-2019-19383 is a high-severity flaw (CVSS 8.8) affecting freeftpd. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

freeFTPd 1.0.8 has a Post-Authentication Buffer Overflow via a crafted SIZE command (this is exploitable even if logging is disabled).

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	2.8% (top 13%)
CISA exploited list	No
Weakness	CWE-120
Published	2019-12-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: freeftpd

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

Am I affected?

Timeline

2019-12-03 20:15 UTCPublished CVE record published
2026-06-17 02:26 UTCUpdated Record last modified

freeftpd freeftpd DOWNGRADE

Affected: 1.0.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.8

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0.8 (Debian / Ubuntu)

apt-cache madison freeftpd sudo apt install freeftpd=<VERSION_BEFORE_1.0.8> sudo apt-mark hold freeftpd

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

dnf --showduplicates list freeftpd sudo dnf downgrade freeftpd-<VERSION_BEFORE_1.0.8> sudo dnf versionlock add freeftpd

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.

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-2019-19383?

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

Is CVE-2019-19383 being exploited?

CVE-2019-19383 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-2019-19383 affect?

CVE-2019-19383 affects freeftpd. Severity is high (CVSS 8.8). freeFTPd 1.0.8 has a Post-Authentication Buffer Overflow via a crafted SIZE command (this is exploitable even if logging is disabled).

How urgent is CVE-2019-19383?

Priority 57/100. High severity; Public exploit reference

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CVE-2005-3812 MEDIUM 6.8 DOWNGRADE freeFTPd 1.0.10 allows remote authenticated users to cause a denial of service (null dereference and crash) vi

References

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