CVE-2020-4305

Name: CVE-2020-4305
Creator: NVD / NIST
Published: 2020-07-09T19:15:11.82+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 4.54%

Last modified Jun 17, 2026

CVE-2020-4305 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. IBM InfoSphere Information Server 11.3, 11.5, and 11.7 could allow a remote attacker to execute arbitrary code on the system, caused by the deserialization of untrusted data. By persuading a victim to visit a specially crafted Web site, an attacker could exploit this vulnerability to execute arbitrary code on the system. EPSS estimates a 4.54% chance of exploitation in the next 30 days.

Description

IBM InfoSphere Information Server 11.3, 11.5, and 11.7 could allow a remote attacker to execute arbitrary code on the system, caused by the deserialization of untrusted data. By persuading a victim to visit a specially crafted Web site, an attacker could exploit this vulnerability to execute arbitrary code on the system. IBM X-Force ID: 176677.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

4.54%

90.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-502

Affected Software

Vendor	Product	Versions
Ibm	Infosphere Information Server	>= 11.7.0.0, <= 11.7.1.1
Ibm	Infosphere Information Server	11.3.0
Ibm	Infosphere Information Server	11.5.0
Ibm	Infosphere Information Server On Cloud	>= 11.7.0.0, <= 11.7.1.1
Ibm	Infosphere Information Server On Cloud	11.5.0.0

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/176677VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6244664Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/176677VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6244664Vendor Advisory

Timeline

Published: Jul 9, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-4305?

How severe is CVE-2020-4305?

CVE-2020-4305 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 4.54% probability of exploitation in the next 30 days.

How do I fix CVE-2020-4305?

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-2020-4305?

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

Scan your code now

Source: NVD / NIST