Is CVE-2012-3363 in the CISA KEV catalog?

No. CVE-2012-3363 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2012-3363?

CVE-2012-3363 has a CVSS v3 base score of 9.1 (CRITICAL).

What is the EPSS score for CVE-2012-3363?

CVE-2012-3363 has an EPSS score of 50.25% (99th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2012-3363?

Upgrade zend framework to 1.11.12 or later.

CVE & CISA-KEV Catalog

CVE-2012-3363

CRITICALEPSS 99th pctl

9.1

CVSS v3

NVD

Description

Zend_XmlRpc in Zend Framework 1.x before 1.11.12 and 1.12.x before 1.12.0 does not properly handle SimpleXMLElement classes, which allows remote attackers to read arbitrary files or create TCP connections via an external entity reference in a DOCTYPE element in an XML-RPC request, aka an XML external entity (XXE) injection attack.

CWE-611XML External Entity (XXE)

How to fix

Remediation Available

zend frameworkNVD

Affected:>= 1.0.0, < 1.11.12Fixed in:1.11.12CVE-2012-3363derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploit Intelligence

50.25%probability of exploitation in 30 days

99thpercentile

Very high risk: more likely to be exploited than 99% of all known CVEs.

References

Patch1

git.moodle.org

Vendor Advisory1

framework.zend.com

Third-Party Advisory2

Mailing List7

Other references1

sec-consult.com

Related Vulnerabilities

Other CWE-611 (XML External Entity (XXE)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-34102	Critical	9.8	100%	KEV	Fix
CVE-2019-9670	Critical	9.8	100%	KEV	Fix
CVE-2022-28219	Critical	9.8	97%	-	-
CVE-2024-22024	High	8.3	95%	-	-
CVE-2024-38653	High	7.5	92%	-	-
CVE-2017-12629	Critical	9.8	92%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.