Security readout for executives and security teams
CVE-2017-5376 is a Mozilla memory-safety flaw in XSLT document handling. Affected versions are Firefox before 51, Firefox ESR before 45.7, and Thunderbird before 45.7. The source bundle does not provide CVSS data or confirmed exploitation evidence, so urgency depends on whether legacy Mozilla clients remain in use. Exposure is most likely in unmanaged or legacy endpoints, embedded desktops, kiosks, or server images still running Firefox < 51, Firefox ESR < 45.7, or Thunderbird < 45.7. Treat this as a legacy-software cleanup priority. It is not KEV-listed in the provided evidence, but affected browsers and mail clients are obsolete and should not remain in business use. Mitigation focus: Upgrade Firefox to 51 or later where still applicable.; Upgrade Firefox ESR to 45.7 or later where still applicable.; Upgrade Thunderbird to 45.7 or later where still applicable..
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
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ATT&CK lookup starting points
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CVE-2017-5376 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/mfsa2017-03/CVE reference · x_refsource_CONFIRM
- https://www.mozilla.org/security/advisories/mfsa2017-02/CVE reference · x_refsource_CONFIRM
- GLSA-201702-22CVE reference · vendor-advisory, x_refsource_GENTOO
- DSA-3832CVE reference · vendor-advisory, x_refsource_DEBIAN
- https://bugzilla.mozilla.org/show_bug.cgi?id=1311687CVE reference · x_refsource_CONFIRM
- GLSA-201702-13CVE reference · vendor-advisory, x_refsource_GENTOO
- 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
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