CVE-2015-0803

Name: CVE-2015-0803
Creator: NVD / NIST
Published: 2015-04-01T10:59:04.8+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.70%

Last modified Jun 17, 2026

CVE-2015-0803 is a vulnerability of currently unknown severity. The HTMLSourceElement::AfterSetAttr function in Mozilla Firefox before 37.0 does not properly constrain the original data type of a casted value during the setting of a SOURCE element's attributes, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via a crafted HTML document.. EPSS estimates a 3.70% chance of exploitation in the next 30 days.

Description

The HTMLSourceElement::AfterSetAttr function in Mozilla Firefox before 37.0 does not properly constrain the original data type of a casted value during the setting of a SOURCE element's attributes, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via a crafted HTML document.

Metrics

EPSS Probability

3.70%

88.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-264

Affected Software

Vendor	Product	Versions
Canonical	Ubuntu Linux	12.04
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	14.10
Opensuse	Opensuse	13.1
Opensuse	Opensuse	13.2
Mozilla	Firefox	<= 36.0.4

References

Timeline

Published: Apr 1, 2015
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-0803?

How severe is CVE-2015-0803?

Severity scoring for CVE-2015-0803 is pending analysis. The EPSS model estimates a 3.70% probability of exploitation in the next 30 days.

How do I fix CVE-2015-0803?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2015-0803?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST