CVE-2004-1743: Easy File Sharing (EFS) Webserver 1.25 allows remote attackers to view arbitrary files via an HTTP request for

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MEDIUM 5.0DOWNGRADE

CVE-2004-1743 is a medium-severity flaw (CVSS 5.0) affecting efs web server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Easy File Sharing (EFS) Webserver 1.25 allows remote attackers to view arbitrary files via an HTTP request for the disk_c virtual folder.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Published	2004-08-24
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: efs software

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

Am I affected?

Timeline

2004-08-24 04:00 UTCPublished CVE record published
2026-06-16 22:08 UTCUpdated Record last modified

efs software efs web server DOWNGRADE

Affected: 1.2 · 1.25

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2

1. Check installed version

apt-cache policy efs-web-server || rpm -q efs-web-server || efs-web-server --version

2. No fixed release: DOWNGRADE to a release before 1.2 (Debian / Ubuntu)

apt-cache madison efs-web-server sudo apt install efs-web-server=<VERSION_BEFORE_1.2> sudo apt-mark hold efs-web-server

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

dnf --showduplicates list efs-web-server sudo dnf downgrade efs-web-server-<VERSION_BEFORE_1.2> sudo dnf versionlock add efs-web-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-2004-1743?

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

Is CVE-2004-1743 being exploited?

CVE-2004-1743 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-2004-1743 affect?

CVE-2004-1743 affects efs web server. Severity is medium (CVSS 5.0). Easy File Sharing (EFS) Webserver 1.25 allows remote attackers to view arbitrary files via an HTTP request for the disk_c virtual folder.

How urgent is CVE-2004-1743?

Priority 42/100. Public exploit reference

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References

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