Security readout for executives and security teams
CVE-2017-5386 is a Mozilla Firefox WebExtension isolation issue. In vulnerable Firefox versions, one extension could potentially affect pages loaded by another extension through data: URLs, creating risk of data disclosure or privilege escalation inside affected extensions. Exposure is most likely in legacy systems running Firefox < 51 or Firefox ESR < 45.7, especially where browser extensions are installed. Current managed browsers should only be exposed if outdated builds remain in use. Treat as a legacy-browser hygiene issue unless vulnerable Firefox versions still exist. Prioritize remediation on unmanaged endpoints, kiosks, old Linux images, and systems with broad extension use. Mitigation focus: Upgrade Firefox to version 51 or later.; Upgrade Firefox ESR to version 45.7 or later.; Apply relevant vendor or distribution security updates..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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Privilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2017-5386 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
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/mfsa2017-02/CVE reference · x_refsource_CONFIRM
- GLSA-201702-22CVE reference · vendor-advisory, x_refsource_GENTOO
- https://bugzilla.mozilla.org/show_bug.cgi?id=1319070CVE reference · x_refsource_CONFIRM
- DSA-3771CVE reference · vendor-advisory, x_refsource_DEBIAN
- https://www.mozilla.org/security/advisories/mfsa2017-01/CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.