CVE-2001-1335: Directory traversal vulnerability in CesarFTP 0.98b and earlier allows remote authenticated users (such as ano

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MEDIUM 5.0DOWNGRADE

CVE-2001-1335 is a medium-severity flaw (CVSS 5.0) affecting cesarftp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Directory traversal vulnerability in CesarFTP 0.98b and earlier allows remote authenticated users (such as anonymous) to read arbitrary files via a GET with a filename that contains a ...%5c (modified dot dot).

Why this priority

EPSS top 5%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	8.2% (top 5%)
CISA exploited list	No
Published	2001-05-27
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: aclogic

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

Am I affected?

Timeline

2001-05-27 04:00 UTCPublished CVE record published
2026-06-16 21:56 UTCUpdated Record last modified

aclogic cesarftp DOWNGRADE

Affected: 0.98b

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.98b

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.98b (Debian / Ubuntu)

apt-cache madison cesarftp sudo apt install cesarftp=<VERSION_BEFORE_0.98b> sudo apt-mark hold cesarftp

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

dnf --showduplicates list cesarftp sudo dnf downgrade cesarftp-<VERSION_BEFORE_0.98b> sudo dnf versionlock add cesarftp

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: ACLogic CesarFTP 0.98b - Directory Traversal

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-2001-1335?

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

Is CVE-2001-1335 being exploited?

CVE-2001-1335 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-2001-1335 affect?

CVE-2001-1335 affects cesarftp. Severity is medium (CVSS 5.0). Directory traversal vulnerability in CesarFTP 0.98b and earlier allows remote authenticated users (such as anonymous) to read arbitrary files via a GET with a filename that contains a ...%5c (modified dot dot).

How urgent is CVE-2001-1335?

Priority 46/100. EPSS top 5%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2006-2961 HIGH 7.5 UPGRADE Stack-based buffer overflow in CesarFTP 0.99g and earlier allows remote attackers to cause a denial of service
CVE-2004-0298 MEDIUM 5.0 DOWNGRADE CesarFTP 0.99e allows remote attackers to cause a denial of service (CPU consumption) via a long RETR paramete
CVE-2003-0329 MEDIUM 4.6 DOWNGRADE CesarFTP 0.99g stores user names and passwords in plaintext in the settings.ini file, which could allow local
CVE-2001-1336 HIGH 7.5 UPGRADE CesarFTP 0.98b and earlier stores usernames and passwords in plaintext in the settings.ini file, which allows
CVE-2001-0826 HIGH 7.5 DOWNGRADE Buffer overflows in CesarFTPD 0.98b allows remote attackers to execute arbitrary commands via long arguments t

References

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