How severe is CVE-2014-5203?

CVE-2014-5203 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2014-5203 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-5203?

CVE-2014-5203 primarily affects Wordpress. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-5203?

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

When was CVE-2014-5203 published?

CVE-2014-5203 was published on 2014-08-18 and last updated on 2026-06-17.

CVE-2014-5203

CVE-2014-5203 is a high-severity vulnerability in Wordpress with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Wordpress
Published: 2014-08-18
Last modified: 2026-06-17

Description

wp-includes/class-wp-customize-widgets.php in the widget implementation in WordPress 3.9.x before 3.9.2 might allow remote attackers to execute arbitrary code via crafted serialized data.

Frequently asked questions

What is CVE-2014-5203?: wp-includes/class-wp-customize-widgets.php in the widget implementation in WordPress 3.9.x before 3.9.2 might allow remote attackers to execute arbitrary code via crafted serialized data.
How severe is CVE-2014-5203?: CVE-2014-5203 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2014-5203 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-5203?: CVE-2014-5203 primarily affects Wordpress. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-5203?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2014-5203 published?: CVE-2014-5203 was published on 2014-08-18 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:wordpress:wordpress:3.9.0:*:*:*:*:*:*:*
cpe:2.3:a:wordpress:wordpress:3.9.1:*:*:*:*:*:*:*

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