CVE-2017-18221

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

0.45% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 37.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

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

2018-03-07 08:00Z8 YR AGO

Last updated

2024-08-05 21:13Z2 YR AGO

Reserved

2018-03-07

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-20Improper Input ValidationClass
• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass

Data version

5.1

Document digest

cc1c2b62e8b220c47fd347021341bbecfb3991b317f6c5d40a97e0cce58fc9ca

• github.comhttps://github.com/torvalds/linux/commit/70feee0e1ef331b22cc51f383d532a0d043fbdccx_refsource_MISC
• usn.ubuntu.comUSN-3655-1https://usn.ubuntu.com/3655-1/vendor-advisoryx_refsource_UBUNTU
• git.kernel.orghttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=70feee0e1ef331b22cc51f383d532a0d043fbdccx_refsource_MISC
• www.kernel.orghttps://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.4x_refsource_MISC
• usn.ubuntu.comUSN-3655-2https://usn.ubuntu.com/3655-2/vendor-advisoryx_refsource_UBUNTU
• www.securityfocus.com103321http://www.securityfocus.com/bid/103321vdb-entryx_refsource_BID