CVE-2012-5357
CriticalPublic exploitEktron 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.
Published Oct 30, 2017 · Updated May 12, 2026
Key Facts
Patch immediately- CVE-2012-5357 is a critical-severity vulnerability (CVSS 9.8 v3) affecting Ektron Content Management System.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 68% probability of exploitation in the next 30 days.
- Fixed versions are available, including Ektron Content Management System 8.02.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3
9.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
68%
Higher than 99.3% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2012-5357 brief as a PDF
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Description
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.
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Ektron Content Management SystemEktron | See advisory | 8.02 |
Patched Releases
Ektron Content Management System
8.02
Timeline
Publicly disclosed
Oct 30, 2017
Last updated
May 12, 2026
Weakness Type
- CWE-19
References
- advisoryhttp://documentation.ektron.com/current/ReleaseNotes/Release8/8.02SP5.htm
- advisoryhttps://technet.microsoft.com/library/security/msvr12-016
- exploitMSF ektron_xslt_exec.rb
- exploithttps://webstersprodigy.net/2012/10/25/cve-2012-5357cve-1012-5358-cool-ektron-xslt-rce-bugs/
- exploitExploitDB-23155
FAQ
Common Questions.
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.
Affected: Ektron Content Management System. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Ektron Content Management System 8.02.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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