CVE-2015-4492: n/a vulnerability

CVE-2015-4492: Use-after-free vulnerability in the XMLHttpRequest::Open implementation in Mozilla Firefox before 40.0 and...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 06:18 UTC (UTC+00:00)

Security readout for executives and security teams

This is a browser memory-safety flaw in older Mozilla Firefox releases. A malicious web context could potentially cause code execution through XMLHttpRequest handling. Business risk is mainly from legacy desktops, servers, or embedded systems still using Firefox before 40.0 or ESR before 38.2. Exposure is most plausible where unsupported or frozen Firefox builds remain installed: Firefox before 40.0 and Firefox ESR 38.x before 38.2. Linux distribution packages referenced by SUSE, Ubuntu, Red Hat, Debian, and Gentoo advisories may have been affected at the time. Prioritize remediation if legacy Firefox exists in the environment. Modern supported Firefox deployments should already be past the affected versions, but old gold images, kiosks, and unmanaged systems deserve confirmation. Mitigation focus: Upgrade Firefox to 40.0 or later, or ESR 38.2 or later.; Apply relevant operating-system vendor browser security updates.; Retire unsupported Firefox ESR or frozen distribution browser packages..

Prepared: Jun 13, 2026, 22:22 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Execution behavior lookup

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CVE-2015-4492 mapping review

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Aug 16, 2015, 01:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
GLSA-201605-06CVE reference · vendor-advisory, x_refsource_GENTOO
https://bugzilla.mozilla.org/show_bug.cgi?id=1185820CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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