CVE-2018-1821

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

15.80% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 96.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

2018-12-13 16:00Z7 YR AGO

Last updated

2024-09-16 23:00Z1 YR AGO

Reserved

2017-12-13

Assigning CNA

ibm

Record state

PUBLISHED

Severity

High (CVSS 7.1)

CNA CVSS vector

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

Weaknesses

• CWE-611Improper Restriction of XML External Entity ReferenceBase

Data version

5.1

Document digest

2b20bce9f7b80094a9d86e6888aa3a0f028ae056b09175f7394b7c76ae7388ce

• www.ibm.comhttps://www.ibm.com/support/docview.wss?uid=ibm10744149x_refsource_CONFIRM
• www.securityfocus.com106325http://www.securityfocus.com/bid/106325vdb-entryx_refsource_BID
• www.exploit-db.com46017https://www.exploit-db.com/exploits/46017/exploitx_refsource_EXPLOIT-DB
• exchange.xforce.ibmcloud.comibm-websphere-cve20181821-xxe(150170)https://exchange.xforce.ibmcloud.com/vulnerabilities/150170vdb-entryx_refsource_XF