Is CVE-2014-1303 in the CISA KEV catalog?

No. CVE-2014-1303 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2014-1303?

CVE-2014-1303 has a CVSS v2 base score of 10.0 (HIGH).

What is the EPSS score for CVE-2014-1303?

CVE-2014-1303 has an EPSS score of 34.78% (98th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2014-1303

HIGHEPSS 98th pctl

10.0

CVSS v2

NVD

Description

Heap-based buffer overflow in Apple Safari 7.0.2 allows remote attackers to execute arbitrary code and bypass a sandbox protection mechanism via unspecified vectors, as demonstrated by Liang Chen during a Pwn2Own competition at CanSecWest 2014.

CWE-119Buffer Overflow

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

34.78%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

http://archives.neohapsis.com/archives/bugtraq/2014-04/0009.html
http://archives.neohapsis.com/archives/bugtraq/2014-04/0135.html
http://archives.neohapsis.com/archives/bugtraq/2014-04/0136.html
http://twitter.com/thezdi/statuses/444157530139136000
http://www.pwn2own.com/2014/03/pwn2own-results-thursday-day-two/
https://support.apple.com/kb/HT6537

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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.