CVE-2012-5357: Ektron Content Management System (CMS) before 8.02 SP5 uses the XslCompiledTransform class with enablescript s

Q: How do I fix CVE-2012-5357?

ektron content management system: upgrade to newer than 8.02. Exact commands for each OS are on this page.

Q: Is CVE-2012-5357 being exploited?

CVE-2012-5357 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2012-5357 affect?

CVE-2012-5357 affects ektron content management system. Severity is critical (CVSS 9.8). Ektron Content Management System (CMS) before 8.02 SP5 uses the XslCompiledTransform class with enablescript set to true, which allows remote attackers to execute arbitrary code with NETWORK SERVICE privileges via crafted XSL data.

Q: How urgent is CVE-2012-5357?

Priority 69/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2012-5357 is a critical-severity flaw (CVSS 9.8) affecting ektron content management system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Ektron Content Management System (CMS) before 8.02 SP5 uses the XslCompiledTransform class with enablescript set to true, which allows remote attackers to execute arbitrary code with NETWORK SERVICE privileges via crafted XSL data.

Why this priority

Critical severity
EPSS top 1%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	67.8% (top 1%)
CISA exploited list	No
Weakness	CWE-19
Published	2017-10-30
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: ektron

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

Am I affected?

Timeline

2017-10-30 14:29 UTCPublished CVE record published
2026-06-16 23:46 UTCUpdated Record last modified

ektron ektron content management system UPGRADE

Affected: <= 8.02

Fixed in: newer than 8.02

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ektron-content-management-system || rpm -q ektron-content-management-system || ektron-content-management-system --version

2. UPGRADE to newer than 8.02 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ektron-content-management-system

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ektron-content-management-system

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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: Ektron 8.02 - XSLT Transform Remote Code Execution (Metasploit)
Metasploit: Ektron 8.02 XSLT Transform Remote Code Execution

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-2012-5357?

ektron content management system: upgrade to newer than 8.02. Exact commands for each OS are on this page.

Is CVE-2012-5357 being exploited?

CVE-2012-5357 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-2012-5357 affect?

CVE-2012-5357 affects ektron content management system. Severity is critical (CVSS 9.8). Ektron Content Management System (CMS) before 8.02 SP5 uses the XslCompiledTransform class with enablescript set to true, which allows remote attackers to execute arbitrary code with NETWORK SERVICE privileges via crafted XSL data.

How urgent is CVE-2012-5357?

Priority 69/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2016-6201 MEDIUM 6.1 UPGRADE Cross-site scripting (XSS) vulnerability in Ektron Content Management System (CMS) before 9.1.0.184 SP3 (9.1.0
CVE-2016-6133 MEDIUM 6.1 UPGRADE Cross-site scripting (XSS) vulnerability in Ektron Content Management System before 9.1.0.184SP3(9.1.0.184.3.1
CVE-2015-4427 LOW 3.5 UPGRADE Multiple cross-site scripting (XSS) vulnerabilities in Test/WorkArea/workarea.aspx in Ektron Content Managemen
CVE-2015-3624 MEDIUM 5.8 UPGRADE Cross-site request forgery (CSRF) vulnerability in Test/WorkArea/DmsMenu/menuActions/MenuActions.aspx in Ektro
CVE-2015-0931 MEDIUM 6.8 DOWNGRADE Ektron Content Management System (CMS) 8.5 and 8.7 before 8.7sp2 and 9.0 before sp1, when the Saxon XSLT parse

References

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