CVE-2020-4782

Name: CVE-2020-4782
Creator: NVD / NIST
Published: 2020-10-28T17:15:13.027+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 2.53%

Last modified Jun 17, 2026

CVE-2020-4782 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 2.53% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

2.53%

82.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Ibm	Websphere Application Server	>= 7.0.0.0, <= 7.0.0.45
Ibm	Websphere Application Server	>= 8.0.0.0, <= 8.0.0.15
Ibm	Websphere Application Server	>= 8.5.0.0, <= 8.5.5.18
Ibm	Websphere Application Server	>= 9.0.0.0, <= 9.0.5.5

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/189213VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6356083Patch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/189213VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6356083Patch, Vendor Advisory

Timeline

Published: Oct 28, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-4782?

How severe is CVE-2020-4782?

CVE-2020-4782 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 2.53% probability of exploitation in the next 30 days.

How do I fix CVE-2020-4782?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-4782?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST