CVE-2021-20354

7.5 highEPSS 4.1%

High (7.5) in ibm websphere application server. EPSS 4.1% chance of exploitation in the next 30 days.

IBM WebSphere Application Server 8.0, 8.5, and 9.0 could allow a remote attacker to traverse directories. An attacker could send a specially-crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system. IBM X-Force ID: 194883.

Severity

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS: 4.1% chance of exploitation in the next 30 days; higher than 90% of CVEs (scores of 2026-10-31)
CWE: CWE-22
Published: 2021-02-18
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

ibm:websphere_application_server

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/194883
https://www.ibm.com/support/pages/node/6415959
https://exchange.xforce.ibmcloud.com/vulnerabilities/194883
https://www.ibm.com/support/pages/node/6415959

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