CVE-2008-6677: Unrestricted file upload vulnerability in fckeditor251/editor/filemanager/connectors/asp/upload.asp in Quicker

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HIGH 7.5DOWNGRADE

CVE-2008-6677 is a high-severity flaw (CVSS 7.5) affecting quickersite. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unrestricted file upload vulnerability in fckeditor251/editor/filemanager/connectors/asp/upload.asp in QuickerSite 1.8.5 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.

Why this priority

High 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	7.5 (High)
EPSS exploit chance	4.0% (top 9%)
CISA exploited list	No
Weakness	CWE-94
Published	2009-04-08
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: quickersite

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

Am I affected?

Timeline

2009-04-08 10:30 UTCPublished CVE record published
2026-06-16 23:02 UTCUpdated Record last modified

quickersite quickersite DOWNGRADE

Affected: 1.8.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.8.5

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.8.5 (Debian / Ubuntu)

apt-cache madison quickersite sudo apt install quickersite=<VERSION_BEFORE_1.8.5> sudo apt-mark hold quickersite

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

dnf --showduplicates list quickersite sudo dnf downgrade quickersite-<VERSION_BEFORE_1.8.5> sudo dnf versionlock add quickersite

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: QuickerSite 1.8.5 - Multiple Vulnerabilities

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-2008-6677?

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

Is CVE-2008-6677 being exploited?

CVE-2008-6677 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-2008-6677 affect?

CVE-2008-6677 affects quickersite. Severity is high (CVSS 7.5). Unrestricted file upload vulnerability in fckeditor251/editor/filemanager/connectors/asp/upload.asp in QuickerSite 1.8.5 allows remote attackers to execute arbitrary code by uploading a file with an executable extension, then accessing it v

How urgent is CVE-2008-6677?

Priority 54/100. High severity; EPSS top 9%: very likely to be exploited; Public exploit reference

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References

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