Security readout for executives and security teams
Plain-English summary
On Windows, old Firefox versions could let a crafted hyperlink hand off to an Internet Explorer-associated protocol and open local files at known paths, after the user approved execution. This is mainly a legacy-browser exposure: affected versions are Firefox before 67.0.2. The source states other operating systems are unaffected.
Executive priority
Treat this as a legacy hygiene issue unless vulnerable Windows Firefox installations still exist. The business urgency is driven by asset age and unmanaged desktop risk, not by confirmed active exploitation in the provided sources.
Technical view
Firefox before 67.0.2 on Windows mishandled hyperlinks using protocols associated with Internet Explorer, such as IE.HTTP:. If approved by the user at a prompt, the link could open a known local file in Internet Explorer. The bundle provides no CVSS, CWE, exploit details, or additional affected products.
Likely exposure
Exposure is limited to Windows endpoints running Firefox older than 67.0.2. Organizations with managed browser updates are unlikely to remain exposed, but legacy desktops, frozen images, and unmanaged systems should be checked.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. Exploitation requires user interaction and approval at a prompt, but the sources do not quantify real-world abuse or identify observed campaigns.
Researcher notes
Keep analysis scoped to Firefox on Windows before 67.0.2. The source describes local file opening via IE-associated protocol links after user approval. Do not infer arbitrary code execution, cross-platform impact, or exploitation in the wild from this bundle.
Mitigation direction
- Update Firefox on Windows to 67.0.2 or later.
- Review Mozilla advisory MFSA2019-16 for vendor guidance.
- Remove unsupported legacy Firefox from managed endpoints.
- Prioritize remediation on Windows systems used for email or web browsing.
Validation and detection
- Inventory Windows endpoints for Firefox versions older than 67.0.2.
- Confirm non-Windows systems are excluded from this specific issue.
- Check endpoint management records for successful Firefox update deployment.
- Review exception lists for frozen or unmanaged browser installations.
Public sources used
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2019-11702 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
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/mfsa2019-16/CVE reference · x_refsource_MISC
- https://bugzilla.mozilla.org/show_bug.cgi?id=1552627CVE reference · x_refsource_MISC
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.