Back to Database
Status published
High
CVE-2021-20453
IBM WebSphere Application Server 8.0, 8.5, and 9.0 is vulnerable...
Vulnerability Description
IBM WebSphere Application Server 8.0, 8.5, and 9.0 is vulnerable to a XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources. IBM X-Force ID: 196648.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-20453
Credits & Attribution
No credits recorded in the NVD database.
References
More from IBM
View All →CVE-2025-66487
Multiple vulnerabilities have been addressed in IBM Aspera Shares
Low
2.7
CVE-2025-66486
Multiple vulnerabilities have been addressed in IBM Aspera Shares
Medium
4.8
CVE-2025-66485
Multiple vulnerabilities have been addressed in IBM Aspera Shares
Medium
5.4
CVE-2025-66484
Multiple vulnerabilities have been addressed in IBM Aspera Shares
Medium
5.5
CVE-2025-66483
Multiple vulnerabilities have been addressed in IBM Aspera Shares
Medium
6.3
Affected Vendor
Affected Software
WebSphere Application Server
Vulnerable Versions:
8.0, 8.5, 9.0
Timeline
Official Publish:
April 20th, 2021
Last Modified:
September 17th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.0/S:U/PR:N/UI:N/AC:L/I:N/C:H/A:L/AV:N/RC:C/RL:O/E:U
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.