CVE-2020-4587

Name: CVE-2020-4587
Creator: NVD / NIST
Published: 2020-08-24T16:15:11.093+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.34%

Last modified Jun 17, 2026

CVE-2020-4587 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. IBM Sterling Connect:Direct for UNIX 4.2.0, 4.3.0, 6.0.0, and 6.1.0 is vulnerable to a stack based buffer ovreflow, caused by improper bounds checking. A local attacker could manipulate CD UNIX to obtain root provileges. EPSS estimates a 0.34% chance of exploitation in the next 30 days.

Description

IBM Sterling Connect:Direct for UNIX 4.2.0, 4.3.0, 6.0.0, and 6.1.0 is vulnerable to a stack based buffer ovreflow, caused by improper bounds checking. A local attacker could manipulate CD UNIX to obtain root provileges. IBM X-Force ID: 184578.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.34%

25.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions	Update
Ibm	Connect\	direct	6.0.0
Ibm	Sterling Connect\	direct	4.2.0

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/184578VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6320317Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/184578VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6320317Vendor Advisory

Timeline

Published: Aug 24, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-4587?

How severe is CVE-2020-4587?

CVE-2020-4587 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.34% probability of exploitation in the next 30 days.

How do I fix CVE-2020-4587?

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-2020-4587?

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

Scan your code now

Source: NVD / NIST