CVE-2018-16396

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

7.96% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 94.4% 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

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

2018-11-16 18:00Z7 YR AGO

Last updated

2024-08-05 10:24Z2 YR AGO

Reserved

2018-09-03

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

0385a23ee95325ebf0c5416b6e3f562d1578dc06a3f651b3fc6106a3f738a1d6

• hackerone.comhttps://hackerone.com/reports/385070x_refsource_MISC
• www.ruby-lang.orghttps://www.ruby-lang.org/en/news/2018/11/06/ruby-2-6-0-preview3-released/x_refsource_CONFIRM
• access.redhat.comRHSA-2018:3729https://access.redhat.com/errata/RHSA-2018:3729vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2018:3730https://access.redhat.com/errata/RHSA-2018:3730vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2018:3731https://access.redhat.com/errata/RHSA-2018:3731vendor-advisoryx_refsource_REDHAT
• www.ruby-lang.orghttps://www.ruby-lang.org/en/news/2018/10/17/ruby-2-3-8-released/x_refsource_CONFIRM
• www.debian.orgDSA-4332https://www.debian.org/security/2018/dsa-4332vendor-advisoryx_refsource_DEBIAN
• usn.ubuntu.comUSN-3808-1https://usn.ubuntu.com/3808-1/vendor-advisoryx_refsource_UBUNTU
• www.ruby-lang.orghttps://www.ruby-lang.org/en/news/2018/10/17/ruby-2-4-5-released/x_refsource_CONFIRM
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20190221-0002/x_refsource_CONFIRM
• www.ruby-lang.orghttps://www.ruby-lang.org/en/news/2018/10/17/not-propagated-taint-flag-in-some-formats-of-pack-cve-2018-16396/x_refsource_CONFIRM
• www.ruby-lang.orghttps://www.ruby-lang.org/en/news/2018/10/17/ruby-2-5-2-released/x_refsource_CONFIRM
• lists.debian.org[debian-lts-announce] 20181028 [SECURITY] [DLA 1558-1] ruby2.1 security updatehttps://lists.debian.org/debian-lts-announce/2018/10/msg00020.htmlmailing-listx_refsource_MLIST
• www.securitytracker.com1042106http://www.securitytracker.com/id/1042106vdb-entryx_refsource_SECTRACK
• lists.opensuse.orgopenSUSE-SU-2019:1771http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.htmlvendor-advisoryx_refsource_SUSE
• access.redhat.comRHSA-2019:2028https://access.redhat.com/errata/RHSA-2019:2028vendor-advisoryx_refsource_REDHAT