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CVE-2012-5357

83
FAUCET Score

CVE-2012-5357 is a critical remote code execution vulnerability affecting Ektron Content Management System (CMS) versions prior to 8.02 SP5. The flaw stems from the CMS using the XslCompiledTransform class with script execution enabled, allowing attackers to execute arbitrary code with NETWORK SERVICE privileges via crafted XSL data. With a CVSS score of 9.8 (Critical) and an EPSS score indicating high exploitability, this vulnerability poses a significant risk due to its network-based attack vector and low attack complexity, leading to full compromise of confidentiality, integrity, and availability. Exploit code is publicly available, including a Metasploit module, though there is no evidence of active exploitation in the wild or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 8.02CPE matchmatch criteria
cpe:2.3:a:ektron:ektron_content_management_system:*:sp4:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
67.78%
Probability of exploitation in next 30 days
EPSS Percentile
99.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
Metasploit: Ektron 8.02 XSLT Transform Remote Code Execution · Oct 16, 2012
ExploitDB: EDB-23155 · Dec 5, 2012
This CVE's current EPSS score of 0.6778 is in the 97th percentile among its peer group of 36,821 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

documentation.ektron.com / current/ReleaseNotes/Release8/8.02SP5.htm
Issue TrackingVendor Advisory
technet.microsoft.com / library/security/msvr12-016
Issue TrackingRelease NotesThird Party Advisory
webstersprodigy.net / 2012/10/25/cve-2012-5357cve-1012-5358-cool-ektron-xslt-rce-bugs
ExploitIssue TrackingThird Party Advisory
rapid7.com / db/modules/exploit/windows/http/ektron_xslt_exec
ExploitIssue TrackingThird Party Advisory