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CVE-2021-20353

HIGH
8.2
CVSS Score
Published: February 10, 2021 at 05:00 PM UTC
Updated: June 17, 2026 at 03:33 AM UTC
1 product affected across 1 vendorWebSphere Application Server

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Severity
HIGH8.2
Exploit prediction
EPSS 5%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

WebSphere Application Server· IBM
95%
7.0.0.0 ≤ v < 7.0.0.458.0.0.0 ≤ v < 8.0.0.158.5.0.0 ≤ v < 8.5.5.209.0.0.0 ≤ v < 9.0.5.77.08.08.59.0
Affected range stops below 7.0.0.45, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.0.0.15, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.5.5.20, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.0.5.7, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

VDB Entryx_refsource_XFVendor Advisory
Source: [email protected]
https://exchange.xforce.ibmcloud.com/vulnerabilities/194882
x_refsource_CONFIRMPatchVendor Advisory
Source: [email protected]
https://www.ibm.com/support/pages/node/6413709
x_refsource_MISCThird Party AdvisoryVDB Entry
Source: [email protected]
https://www.zerodayinitiative.com/advisories/ZDI-21-174/

CVSS

8.2HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-611

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