CVE-2001-0827: Cerberus FTP server 1.0 - 1.5 allows remote attackers to cause a denial of service (crash) via a large number

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HIGH 7.5REMOTEDOWNGRADE

CVE-2001-0827 is a high-severity flaw (CVSS 7.5) affecting ceberus ftp server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cerberus FTP server 1.0 - 1.5 allows remote attackers to cause a denial of service (crash) via a large number of "PASV" requests.

Why this priority

High severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Weakness	CWE-400
Published	2001-12-06
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: grant averett

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2001-12-06 05:00 UTCPublished CVE record published
2026-06-16 21:55 UTCUpdated Record last modified

grant averett ceberus ftp server DOWNGRADE

Affected: 1.0 · 1.1 · 1.01 · 1.2 · 1.3 · 1.5 · 1.22

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy ceberus-ftp-server || rpm -q ceberus-ftp-server || ceberus-ftp-server --version

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

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

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

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

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-2001-0827?

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

Is CVE-2001-0827 being exploited?

CVE-2001-0827 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-2001-0827 affect?

CVE-2001-0827 affects ceberus ftp server. Severity is high (CVSS 7.5). Cerberus FTP server 1.0 - 1.5 allows remote attackers to cause a denial of service (crash) via a large number of "PASV" requests.

How urgent is CVE-2001-0827?

Priority 49/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2001-0702 HIGH 7.5 DOWNGRADE Cerberus FTP 1.5 and earlier allows remote attackers to cause a denial of service, and possibly execute arbitr

References

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