What’s Vulnerable › Vulnerabilities

CVE-2015-4492

• Severity: high (CVSS 7.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2015-08-16 · updated 2026-06-17

Description

Use-after-free vulnerability in the XMLHttpRequest::Open implementation in Mozilla Firefox before 40.0 and Firefox ESR 38.x before 38.2 might allow remote attackers to execute arbitrary code via a SharedWorker object that makes recursive calls to the open method of an XMLHttpRequest object.

Affected products

• Canonical Ubuntu Linux: 12.04, 14.04, 15.04
• Mozilla Firefox: through 39.0.3; 38.0, 38.0.1, 38.0.5, 38.1.0
• Opensuse: 13.1, 13.2
• Oracle Corporation Solaris Operating System: 11.3

References

• http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00014.html
• http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00015.html
• http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.html
• http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00016.html
• http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00025.html
• http://lists.opensuse.org/opensuse-updates/2015-08/msg00030.html
• http://lists.opensuse.org/opensuse-updates/2015-08/msg00031.html
• http://rhn.redhat.com/errata/RHSA-2015-1586.html
• http://www.debian.org/security/2015/dsa-3333
• http://www.mozilla.org/security/announce/2015/mfsa2015-92.html
• http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
• http://www.securityfocus.com/bid/76297

Get alerted when CVE-2015-4492 or the next vulnerability affects your stack