CVE-2006-5850: Stack-based buffer overflow in Essentia Web Server 2.15 for Windows allows remote attackers to execute arbitra

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HIGH 7.5DOWNGRADE

CVE-2006-5850 is a high-severity flaw (CVSS 7.5) affecting essentia web server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflow in Essentia Web Server 2.15 for Windows allows remote attackers to execute arbitrary code via a long URI, as demonstrated by a GET or HEAD request. NOTE: some of these details are obtained from third party information.

Why this priority

High severity
EPSS top 6%: 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	7.5% (top 6%)
CISA exploited list	No
Published	2006-11-10
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: essen

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

Am I affected?

Timeline

2006-11-10 02:07 UTCPublished CVE record published
2026-06-16 22:31 UTCUpdated Record last modified

essen essentia web server DOWNGRADE

Affected: 2.15

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.15

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.15 (Debian / Ubuntu)

apt-cache madison essentia-web-server sudo apt install essentia-web-server=<VERSION_BEFORE_2.15> sudo apt-mark hold essentia-web-server

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

dnf --showduplicates list essentia-web-server sudo dnf downgrade essentia-web-server-<VERSION_BEFORE_2.15> sudo dnf versionlock add essentia-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.

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: Essentia Web Server 2.15 - GET Remote Denial of Service
Exploit-DB: Essentia Web Server 2.1 - 'URL' Remote Buffer Overflow

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-2006-5850?

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

Is CVE-2006-5850 being exploited?

CVE-2006-5850 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-2006-5850 affect?

CVE-2006-5850 affects essentia web server. Severity is high (CVSS 7.5). Stack-based buffer overflow in Essentia Web Server 2.15 for Windows allows remote attackers to execute arbitrary code via a long URI, as demonstrated by a GET or HEAD request. NOTE: some of these details are obtained from third party infor

How urgent is CVE-2006-5850?

Priority 55/100. High severity; EPSS top 6%: very likely to be exploited; Public exploit reference

Software pages

Windows vulnerabilities

Related CVEs

CVE-2002-0313 HIGH 7.5 DOWNGRADE Buffer overflow in Essentia Web Server 2.1 allows remote attackers to cause a denial of service, and possibly
CVE-2002-0312 MEDIUM 5.0 DOWNGRADE Directory traversal vulnerability in Essentia Web Server 2.1 allows remote attackers to read arbitrary files v

References

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