CVE-2018-1638

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

1.74% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 77.5% 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

2018-07-31 13:00Z8 YR AGO

Last updated

2024-09-16 22:41Z2 YR AGO

Reserved

2017-12-13

Assigning CNA

ibm

Record state

PUBLISHED

Severity

Medium (CVSS 5.9)

CNA CVSS vector

CVSS:3.0/A:N/AC:H/AV:N/C:N/I:H/PR:N/S:U/UI:N/E:U/RC:C/RL:O

Weaknesses

• CWE-287Improper AuthenticationClass

Data version

5.1

Document digest

b10332ba88509c8dcd5a15a53cf12f787e6f031e53a702d1ebc4e04f8b7f2686

• www.ibm.comhttps://www.ibm.com/support/docview.wss?uid=ibm10718415x_refsource_CONFIRM
• exchange.xforce.ibmcloud.comibm-api-cve20181638-sec-bypass(144483)https://exchange.xforce.ibmcloud.com/vulnerabilities/144483vdb-entryx_refsource_XF