How severe is CVE-2012-6531?

CVE-2012-6531 has a CVSS 2.0 base score of 6.4, rated medium severity.

Is CVE-2012-6531 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-6531?

CVE-2012-6531 primarily affects Zend Zend Framework. In total, 59 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-6531?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2012-6531 published?

CVE-2012-6531 was published on 2013-02-13 and last updated on 2026-06-16.

CVE-2012-6531

CVE-2012-6531 is a medium-severity vulnerability in Zend Zend Framework with a CVSS 2.0 base score of 6.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 6.4)
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Zend Zend Framework
Published: 2013-02-13
Last modified: 2026-06-16

Description

(1) Zend_Dom, (2) Zend_Feed, and (3) Zend_Soap in Zend Framework 1.x before 1.11.13 and 1.12.x before 1.12.0 do not properly handle SimpleXMLElement classes, which allow 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, a different vulnerability than CVE-2012-3363.

Frequently asked questions

What is CVE-2012-6531?: (1) Zend_Dom, (2) Zend_Feed, and (3) Zend_Soap in Zend Framework 1.x before 1.11.13 and 1.12.x before 1.12.0 do not properly handle SimpleXMLElement classes, which allow 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, a different vulnerability than CVE-2012-3363.
How severe is CVE-2012-6531?: CVE-2012-6531 has a CVSS 2.0 base score of 6.4, rated medium severity.
Is CVE-2012-6531 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-6531?: CVE-2012-6531 primarily affects Zend Zend Framework. In total, 59 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-6531?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-6531 published?: CVE-2012-6531 was published on 2013-02-13 and last updated on 2026-06-16.

References

Affected products (59)

cpe:2.3:a:zend:zend_framework:1.0.4:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.5.0:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.5.1:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.5.2:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.5.3:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.6.0:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.6.1:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.6.2:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.7.0:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.7.1:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.7.2:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.7.3:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.7.4:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.7.5:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.7.6:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.7.7:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.7.8:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.7.9:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.8.0:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.8.1:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.8.2:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.8.3:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.8.4:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.8.5:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.9.0:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.9.1:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.9.2:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.9.3:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.9.4:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.9.5:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.9.6:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.9.7:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.9.8:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.10.0:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.10.1:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.10.2:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.10.3:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.10.4:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.10.5:*:*:*:*:*:*:*
cpe:2.3:a:zend:zend_framework:1.10.6:*:*:*:*:*:*:*

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