CVE-2019-11725: Mozilla Firefox vulnerability

CVE-2019-11725: When a user navigates to site marked as unsafe by the Safebrowsing API, warning messages are displayed and...

When a user navigates to site marked as unsafe by the Safebrowsing API, warning messages are displayed and navigation is interrupted but resources from the same site loaded through websockets are not blocked, leading to the loading of unsafe resources and bypassing safebrowsing protections. This vulnerability affects Firefox < 68.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 4, 2024, 23:03 UTC (UTC+00:00)

Security readout for executives and security teams

Firefox versions before 68 could warn users about an unsafe site but still allow WebSocket-loaded resources from that same site. This weakened Safe Browsing protections and could let unsafe content load despite the user-facing block. Exposure is limited to environments running Firefox before version 68, including legacy desktop fleets or distribution-packaged Firefox builds not updated through vendor channels. Treat as a targeted browser hygiene issue. Prioritize legacy Firefox remediation, especially on user workstations with internet access, but available evidence does not justify emergency response. Mitigation focus: Update Firefox to version 68 or later.; Apply relevant Gentoo or openSUSE security updates where applicable.; Remove or isolate unsupported legacy Firefox installations..

Prepared: Jun 6, 2026, 14:06 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: Jul 23, 2019, 13:16 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

4Source 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://www.mozilla.org/security/advisories/mfsa2019-21/CVE reference · x_refsource_MISC
https://bugzilla.mozilla.org/show_bug.cgi?id=1483510CVE reference · x_refsource_MISC
GLSA-201908-12CVE reference · vendor-advisory, x_refsource_GENTOO

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

MozillaFirefoxunspecifiedListed

Weakness

CWE details

No CWE listed

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