Medium severity · published Oct 28, 2020
CVE-2020-4782
IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 could allow a remote attacker to traverse directories on the system
6.5
CVSS
2.6%
EPSS
No
On KEV
Description
IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 could allow a remote attacker to traverse directories on the system. An attacker could send a specially-crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.6% · higher than 85% 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 through 7.0.0.45; 8.0.0.0 through 8.0.0.15; 8.5.0.0 through 8.5.5.18; 9.0.0.0 through 9.0.5.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-4782
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-4782
VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/189213
Patch
https://www.ibm.com/support/pages/node/6356083
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