CVE-2018-18021

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

0.59% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 48.0% of scored records. A rank, not a probability.

NVD base score

7.1 (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:H/A:H

NVD analysis status

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

Red Hat severity

Important. 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

2018-10-07 06:00Z8 YR AGO

Last updated

2024-08-05 11:01Z2 YR AGO

Reserved

2018-10-07

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

Data version

5.1

Document digest

685c4632404580b67eead20267c0ac27c41f7fc85759fe31b46dbe18e4c52600

• usn.ubuntu.comUSN-3821-1https://usn.ubuntu.com/3821-1/vendor-advisoryx_refsource_UBUNTU
• github.comhttps://github.com/torvalds/linux/commit/2a3f93459d689d990b3ecfbe782fec89b97d3279x_refsource_MISC
• www.openwall.comhttps://www.openwall.com/lists/oss-security/2018/10/02/2x_refsource_MISC
• cdn.kernel.orghttps://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.12x_refsource_MISC
• access.redhat.comRHSA-2018:3656https://access.redhat.com/errata/RHSA-2018:3656vendor-advisoryx_refsource_REDHAT
• github.comhttps://github.com/torvalds/linux/commit/d26c25a9d19b5976b319af528886f89cf455692dx_refsource_MISC
• www.securityfocus.com105550http://www.securityfocus.com/bid/105550vdb-entryx_refsource_BID
• usn.ubuntu.comUSN-3821-2https://usn.ubuntu.com/3821-2/vendor-advisoryx_refsource_UBUNTU
• git.kernel.orghttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2a3f93459d689d990b3ecfbe782fec89b97d3279x_refsource_MISC
• git.kernel.orghttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d26c25a9d19b5976b319af528886f89cf455692dx_refsource_MISC
• www.debian.orgDSA-4313https://www.debian.org/security/2018/dsa-4313vendor-advisoryx_refsource_DEBIAN
• usn.ubuntu.comUSN-3931-1https://usn.ubuntu.com/3931-1/vendor-advisoryx_refsource_UBUNTU
• usn.ubuntu.comUSN-3931-2https://usn.ubuntu.com/3931-2/vendor-advisoryx_refsource_UBUNTU