Is CVE-2013-0800 in the CISA KEV catalog?

No. CVE-2013-0800 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2013-0800?

CVE-2013-0800 has a CVSS v2 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2013-0800?

CVE-2013-0800 has an EPSS score of 3.94% (89th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2013-0800?

Upgrade DeveloperEdition to 20.0 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2013-0800

MEDIUMEPSS 89th pctl

6.8

CVSS v2

NVD

Description

Integer signedness error in the pixman_fill_sse2 function in pixman-sse2.c in Pixman, as distributed with Cairo and used in Mozilla Firefox before 20.0, Firefox ESR 17.x before 17.0.5, Thunderbird before 17.0.5, Thunderbird ESR 17.x before 17.0.5, SeaMonkey before 2.17, and other products, allows remote attackers to execute arbitrary code via crafted values that trigger attempted use of a (1) negative box boundary or (2) negative box size, leading to an out-of-bounds write operation.

How to fix

Remediation Available

DeveloperEditionWindows application

Affected:20.0Fixed in:20.0Mozilla

Affected:17.0 17.0.5Fixed in:17.0.5Mozilla

Mozilla Firefox (en-US)Windows application

Affected:17.0 17.0.5Fixed in:17.0.5Mozilla

Affected:20.0Fixed in:20.0Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:17.0.5Fixed in:17.0.5Mozilla

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

3.94%probability of exploitation in 30 days

89thpercentile

Elevated risk: more likely to be exploited than 89% of all known CVEs.

References

Patch1

bugzilla.mozilla.org

Vendor Advisory1

mozilla.org

Third-Party Advisory8

Other references2

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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.