CVE-2017-5381: Mozilla Firefox vulnerability

CVE-2017-5381: The "export" function in the Certificate Viewer can force local filesystem navigation when the "common name...

The "export" function in the Certificate Viewer can force local filesystem navigation when the "common name" in a certificate contains slashes, allowing certificate content to be saved in unsafe locations with an arbitrary filename. This vulnerability affects Firefox < 51.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 5, 2024, 14:55 UTC (UTC+00:00)

Security readout for executives and security teams

Firefox before version 51 could mishandle certificate exports. A certificate name containing slashes could steer where the exported certificate file was saved, potentially placing certificate content in an unsafe local path with an arbitrary filename. Exposure is limited to systems still running Firefox before 51, especially legacy endpoints, kiosks, or unmanaged machines. The bundle does not identify other Mozilla products or current Firefox releases as affected. Treat this as a legacy exposure cleanup item, not an emergency based on available evidence. Any remaining Firefox before 51 should be upgraded because unsupported browsers accumulate broader security risk. Mitigation focus: Upgrade affected Firefox installations to version 51 or later, preferably a supported current release.; Retire or isolate legacy systems that cannot update Firefox.; Review Mozilla advisory MFSA 2017-01 for vendor-confirmed remediation context..

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

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=1017616CVE reference · x_refsource_CONFIRM
https://www.mozilla.org/security/advisories/mfsa2017-01/CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

MozillaFirefoxunspecifiedListed

Weakness

CWE details

No CWE listed

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