CVE-2020-4492

Name: CVE-2020-4492
Creator: NVD / NIST
Published: 2020-08-31T13:15:10.997+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.32%

Last modified Jun 17, 2026

CVE-2020-4492 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. IBM Spectrum Scale V5.0.0.0 through V5.0.4.3 and V4.2.0.0 through V4.2.3.21 could allow a local attacker to cause a denial of service crashing the kernel by sending a subset of ioctls on the device with invalid arguments. IBM X-Force ID: 181992.. EPSS estimates a 0.32% chance of exploitation in the next 30 days.

Description

IBM Spectrum Scale V5.0.0.0 through V5.0.4.3 and V4.2.0.0 through V4.2.3.21 could allow a local attacker to cause a denial of service crashing the kernel by sending a subset of ioctls on the device with invalid arguments. IBM X-Force ID: 181992.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.32%

23.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-88

Affected Software

Vendor	Product	Versions
Ibm	Spectrum Scale	>= 4.2.0.0, <= 4.2.3.21
Ibm	Spectrum Scale	>= 5.0.0.0, <= 5.0.4.3

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/181992VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6324249Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/181992VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6324249Vendor Advisory

Timeline

Published: Aug 31, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-4492?

How severe is CVE-2020-4492?

CVE-2020-4492 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.32% probability of exploitation in the next 30 days.

How do I fix CVE-2020-4492?

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-2020-4492?

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

Scan your code now

Source: NVD / NIST