CVE-2017-3891

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.28% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 68.0% of scored records. A rank, not a probability.

NVD base score

8.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2017-11-14 21:00Z8 YR AGO

Last updated

2025-08-22 14:48Z1 YR AGO

Reserved

2016-12-21

Assigning CNA

blackberry

Record state

PUBLISHED

Severity

Critical (CVSS 9.6)

CNA CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Weaknesses

• CWE-923Improper Restriction of Communication Channel to Intended EndpointsClass
• CWE-863Incorrect AuthorizationClass

Data version

5.1

Document digest

78f44264d25d6bde974769c2ee76b184576a1e5809865ff88df072ec228d0999

• support.blackberry.comhttp://support.blackberry.com/kb/articleDetail?articleNumber=000046674x_refsource_CONFIRM
• www.midnightbluelabs.comhttps://www.midnightbluelabs.com/blog/2017/12/8/elevation-of-privilege-vulnerability-in-qnx-qnetx_refsource_MISC