How severe is CVE-2017-3891?

CVE-2017-3891 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-3891 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-3891?

CVE-2017-3891 affects Blackberry Qnx Software Development Platform. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-3891?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2017-3891 published?

CVE-2017-3891 was published on 2017-11-14 and last updated on 2026-06-17.

CVE-2017-3891

CVE-2017-3891 is a critical-severity vulnerability in Blackberry Qnx Software Development Platform with a CVSS 3.x base score of 9.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-863.

Key facts

Severity: Critical (CVSS 3.x base score 9.6)
CVSS v2: 6.8
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Blackberry Qnx Software Development Platform
Published: 2017-11-14
Last modified: 2026-06-17

Description

In BlackBerry QNX Software Development Platform (SDP) 6.6.0, an elevation of privilege vulnerability in the default configuration of the QNX SDP with QNet enabled on networks comprising two or more QNet nodes could allow an attacker to access local and remote files or take ownership of files on other QNX nodes regardless of permissions by executing commands targeting arbitrary nodes from a secondary QNX 6.6.0 QNet node.

Frequently asked questions

What is CVE-2017-3891?: In BlackBerry QNX Software Development Platform (SDP) 6.6.0, an elevation of privilege vulnerability in the default configuration of the QNX SDP with QNet enabled on networks comprising two or more QNet nodes could allow an attacker to access local and remote files or take ownership of files on other QNX nodes regardless of permissions by executing commands targeting arbitrary nodes from a secondary QNX 6.6.0 QNet node.
How severe is CVE-2017-3891?: CVE-2017-3891 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-3891 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-3891?: CVE-2017-3891 affects Blackberry Qnx Software Development Platform. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-3891?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2017-3891 published?: CVE-2017-3891 was published on 2017-11-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:blackberry:qnx_software_development_platform:6.6.0:*:*:*:*:*:*:*

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