Is CVE-2014-0503 in the CISA KEV catalog?

No. CVE-2014-0503 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2014-0503?

CVE-2014-0503 has a CVSS v2 base score of 6.4 (MEDIUM).

What is the EPSS score for CVE-2014-0503?

CVE-2014-0503 has an EPSS score of 4.29% (90th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2014-0503?

Upgrade Clean Flash Player 34.0.0.330 Installer to 12.0.0.77 or later.

CVE & CISA-KEV Catalog

CVE-2014-0503

MEDIUMEPSS 90th pctl

6.4

CVSS v2

NVD

Description

Adobe Flash Player before 11.7.700.272 and 11.8.x through 12.0.x before 12.0.0.77 on Windows and OS X, and before 11.2.202.346 on Linux, allows remote attackers to bypass the Same Origin Policy via unspecified vectors.

CWE-264Permissions, Privileges, and Access Controls

How to fix

Remediation Available

Clean Flash Player 34.0.0.330 InstallerWindows application

Affected:11.8 12.0.0.77Fixed in:12.0.0.77

Affected:11.0 11.2.202.346Fixed in:11.2.202.346

Affected:11.0 11.7.700.272Fixed in:11.7.700.272

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

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

4.29%probability of exploitation in 30 days

90thpercentile

Elevated risk: more likely to be exploited than 90% of all known CVEs.

References

Vendor Advisory1

helpx.adobe.com

Third-Party Advisory4

Related Vulnerabilities

Other CWE-264 (Permissions, Privileges, and Access Controls) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2012-1456	Medium	4.3	100%	-	-
CVE-2012-1459	Medium	4.3	100%	-	Fix
CVE-2012-1446	Medium	4.3	100%	-	-
CVE-2012-1443	Medium	4.3	100%	-	-
CVE-2012-1442	Medium	4.3	99%	-	-
CVE-2012-1457	Medium	4.3	98%	-	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 2026-05-06.