Security readout for executives and security teams
CVE-2017-3891 affects BlackBerry QNX SDP 6.6.0 when QNet is enabled across two or more QNX nodes. A nearby network attacker using another QNX 6.6.0 QNet node could bypass permissions to read or take ownership of files on other nodes. The impact is severe for QNX environments that rely on QNet trust boundaries. Exposure is likely limited to QNX SDP 6.6.0 deployments with QNet enabled and at least two QNet nodes on the relevant network. Systems without QNet, single-node setups, or non-6.6.0 versions are not shown as affected by the supplied bundle. Prioritize urgently if QNX SDP 6.6.0 with QNet supports production, industrial, embedded, or safety-relevant operations. The risk is not broad internet exposure, but compromise inside the QNet environment could undermine file integrity and control assumptions across connected nodes. Mitigation focus: Review BlackBerry advisory 000046674 for vendor-approved remediation.; Inventory QNX SDP 6.6.0 systems and identify QNet-enabled nodes.; Reduce unnecessary QNet exposure between nodes where operationally feasible..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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Open ATT&CK lookupCVE-2017-3891 mapping review
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Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.6 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H2.86Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.6CriticalVector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.midnightbluelabs.com/blog/2017/12/8/elevation-of-privilege-vulnerability-in-qnx-qnetCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
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Improper Restriction of Communication Channel to Intended Endpoints
Improper Restriction of Communication Channel to Intended Endpoints represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.