How severe is CVE-2012-5357?

CVE-2012-5357 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2012-5357 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 68% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-5357?

CVE-2012-5357 affects Ektron Ektron Content Management System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2012-5357?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2012-5357 published?

CVE-2012-5357 was published on 2017-10-30 and last updated on 2026-06-16.

CVE-2012-5357

CVE-2012-5357 is a critical-severity vulnerability in Ektron Ektron Content Management System with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 68% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-19.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 68% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-19
Affected product: Ektron Ektron Content Management System
Published: 2017-10-30
Last modified: 2026-06-16

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.

Frequently asked questions

What is CVE-2012-5357?: 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 severe is CVE-2012-5357?: CVE-2012-5357 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2012-5357 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 68% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-5357?: CVE-2012-5357 affects Ektron Ektron Content Management System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2012-5357?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2012-5357 published?: CVE-2012-5357 was published on 2017-10-30 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:ektron:ektron_content_management_system:*:sp4:*:*:*:*:*:*

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