CVE-2017-5422: Mozilla Firefox vulnerability

CVE-2017-5422: If a malicious site uses the "view-source:" protocol in a series within a single hyperlink, it can trigger...

If a malicious site uses the "view-source:" protocol in a series within a single hyperlink, it can trigger a non-exploitable browser crash when the hyperlink is selected. This was fixed by no longer making "view-source:" linkable. This vulnerability affects Firefox < 52 and Thunderbird < 52.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 5, 2024, 15:04 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old Mozilla issue where a malicious link could crash Firefox or Thunderbird when selected. The source describes the crash as non-exploitable, so business risk is mainly disruption on legacy clients rather than data theft or system compromise. Exposure is limited to environments still running Firefox or Thunderbird versions below 52. Modern supported deployments should not be exposed based on the provided sources. Treat this as low urgency unless legacy Mozilla clients remain in production. Prioritize removal during normal vulnerability hygiene and unsupported software cleanup. Mitigation focus: Upgrade Firefox and Thunderbird to version 52 or later.; Prefer currently supported Mozilla versions across managed endpoints.; Remove or isolate obsolete Firefox and Thunderbird installations..

Prepared: Jun 7, 2026, 06:44 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: Jun 11, 2018, 21:00 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

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://bugzilla.mozilla.org/show_bug.cgi?id=1295002CVE reference · x_refsource_CONFIRM
https://www.mozilla.org/security/advisories/mfsa2017-09/CVE reference · x_refsource_CONFIRM
https://www.mozilla.org/security/advisories/mfsa2017-05/CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

MozillaFirefoxunspecifiedListed

MozillaThunderbirdunspecifiedListed

Weakness

CWE details

No CWE listed

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