CVE-2009-4817: Unrestricted file upload vulnerability in Element-IT Ultimate Uploader 1.3 allows remote attackers to execute

This month

MEDIUM 6.8DOWNGRADE

CVE-2009-4817 is a medium-severity flaw (CVSS 6.8) affecting ultimate uploader. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unrestricted file upload vulnerability in Element-IT Ultimate Uploader 1.3 allows remote attackers to execute arbitrary code by uploading a file with an executable extension, then accessing it via a direct request to the file in upload/.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	3.4% (top 11%)
CISA exploited list	No
Published	2010-04-27
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: element-it

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

Am I affected?

Timeline

2010-04-27 15:30 UTCPublished CVE record published
2026-06-16 23:14 UTCUpdated Record last modified

element-it ultimate uploader DOWNGRADE

Affected: 1.3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3.0

1. Check installed version

apt-cache policy ultimate-uploader || rpm -q ultimate-uploader || ultimate-uploader --version

2. No fixed release: DOWNGRADE to a release before 1.3.0 (Debian / Ubuntu)

apt-cache madison ultimate-uploader sudo apt install ultimate-uploader=<VERSION_BEFORE_1.3.0> sudo apt-mark hold ultimate-uploader

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

dnf --showduplicates list ultimate-uploader sudo dnf downgrade ultimate-uploader-<VERSION_BEFORE_1.3.0> sudo dnf versionlock add ultimate-uploader

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: Ultimate Uploader 1.3 - Arbitrary File Upload

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-2009-4817?

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

Is CVE-2009-4817 being exploited?

CVE-2009-4817 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-2009-4817 affect?

CVE-2009-4817 affects ultimate uploader. Severity is medium (CVSS 6.8). Unrestricted file upload vulnerability in Element-IT Ultimate Uploader 1.3 allows remote attackers to execute arbitrary code by uploading a file with an executable extension, then accessing it via a direct request to the file in upload/.

How urgent is CVE-2009-4817?

Priority 51/100. Public exploit reference

References

← Back to latest CVEs