Login Request a demo
High severity · published Feb 10, 2021
CVE-2021-20353
IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data
8.2
CVSS
5.2%
EPSS
No
On KEV
Description
IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 is vulnerable to an 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: 194882.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.2% · higher than 92% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WA
Websphere Application Server · Ibm
7.0.0.0 before 7.0.0.45; 8.0.0.0 before 8.0.0.15; 8.5.0.0 before 8.5.5.20; 9.0.0.0 before 9.0.5.7 · source: NVD
Affected product
WA
Websphere Application Server
Ibm
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-20353
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-20353
VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/194882
Patch
https://www.ibm.com/support/pages/node/6413709
Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-174/
More from Websphere Application Server
9.8
CVE-2015-7450
IBM WebSphere Application Server and Server Hypervisor Edition Code Injection.
9.8
CVE-2026-8400
Multiple Vulnerabilities in IBM® Java SDK affect IBM WebSphere Application Server and WebSphere Application Server Liberty due to the July 2026 CPU
9.8
CVE-2026-14529
IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by a server-side request forgery
9.8
CVE-2026-14446
IBM WebSphere Application Server is affected by a privilege escalation
9.8
CVE-2026-14512
IBM WebSphere Application Server is affected by an unsafe deserialization and exposure of sensitive information