CVE-2015-7197: n/a vulnerability

CVE-2015-7197: Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4 improperly control the ability of a web worker...

Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4 improperly control the ability of a web worker to create a WebSocket object, which allows remote attackers to bypass intended mixed-content restrictions via crafted JavaScript code.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 07:43 UTC (UTC+00:00)

Security readout for executives and security teams

This issue affected older Mozilla Firefox releases. A malicious web page could use JavaScript in a web worker to bypass mixed-content restrictions, weakening protections that normally stop insecure WebSocket activity from secure contexts. Exposure is most likely on endpoints still running Firefox before 42.0 or Firefox ESR before 38.4, including distro-packaged builds referenced by vendor advisories. Current supported browser deployments are unlikely to be affected. Treat as a legacy browser hygiene issue unless old Firefox versions remain in production. Prioritize remediation on managed endpoints, kiosks, and servers that still launch browser-based workflows. Mitigation focus: Upgrade Firefox to 42.0 or later.; Upgrade Firefox ESR to 38.4 or later.; Apply relevant distro browser updates from vendor advisories..

Prepared: Jun 13, 2026, 21:45 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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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Nov 5, 2015, 02:00 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
https://bugzilla.mozilla.org/show_bug.cgi?id=1204269CVE reference · x_refsource_CONFIRM
GLSA-201512-10CVE reference · vendor-advisory, x_refsource_GENTOO

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

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Weakness

CWE details

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