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CVE Record

CVE-2015-4497: Use-after-free vulnerability in the CanvasRenderingContext2D implementation in Mozilla Firefox before 40.0....

Use-after-free vulnerability in the CanvasRenderingContext2D implementation in Mozilla Firefox before 40.0.3 and Firefox ESR 38.x before 38.2.1 allows remote attackers to execute arbitrary code by leveraging improper interaction between resize events and changes to Cascading Style Sheets (CSS) token sequences for a CANVAS element.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

This is an old Firefox memory-safety flaw. A malicious web page could trigger improper Canvas and CSS handling and potentially run code on a user's machine. The business risk is mainly legacy browser exposure, not modern fully patched Firefox installations. Exposure is most likely on unmanaged endpoints, kiosks, lab systems, or legacy Linux builds still running affected Firefox or Firefox ESR versions. Normal current browser fleets are unlikely to be exposed. Treat this as a legacy exposure cleanup item unless vulnerable browsers are still in production. If affected versions exist, prioritize remediation because browser remote code execution can lead to endpoint compromise. Mitigation focus: Upgrade Firefox to 40.0.3 or later, or ESR 38.2.1 or later.; Apply relevant operating system vendor browser packages from Debian, Ubuntu, Red Hat, or SUSE advisories.; Identify and retire legacy systems that cannot receive patched Firefox builds..

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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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CVE-2015-4497 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
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

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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