CVE-2002-2417: acFTP 1.4 does not properly handle when an invalid password is provided by the user during authentication, whi

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HIGH 10.0DOWNGRADE

CVE-2002-2417 is a high-severity flaw (CVSS 10.0) affecting acftp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

acFTP 1.4 does not properly handle when an invalid password is provided by the user during authentication, which allows remote attackers to hide or misrepresent certain activity from log files and possibly gain privileges.

Why this priority

Critical severity
EPSS top 9%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	4.2% (top 9%)
CISA exploited list	No
Weakness	CWE-287
Published	2002-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: acftp

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

Am I affected?

Timeline

2002-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:01 UTCUpdated Record last modified

acftp acftp DOWNGRADE

Affected: 1.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.4

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.4 (Debian / Ubuntu)

apt-cache madison acftp sudo apt install acftp=<VERSION_BEFORE_1.4> sudo apt-mark hold acftp

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

dnf --showduplicates list acftp sudo dnf downgrade acftp-<VERSION_BEFORE_1.4> sudo dnf versionlock add acftp

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.

Exploit-DB: acFTP 1.4 - Invalid Password Weak Authentication

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-2002-2417?

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

Is CVE-2002-2417 being exploited?

CVE-2002-2417 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-2002-2417 affect?

CVE-2002-2417 affects acftp. Severity is high (CVSS 10.0). acFTP 1.4 does not properly handle when an invalid password is provided by the user during authentication, which allows remote attackers to hide or misrepresent certain activity from log files and possibly gain privileges.

How urgent is CVE-2002-2417?

Priority 63/100. Critical severity; EPSS top 9%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2006-6775 LOW 3.5 DOWNGRADE acFTP 1.5 allows remote authenticated users to cause a denial of service via a crafted argument to the (1) RES
CVE-2006-2242 MEDIUM 5.0 DOWNGRADE acFTP 1.4 allows remote attackers to cause a denial of service (application crash) via a long string with "{"

References

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