CVE-2020-15479

Name: CVE-2020-15479
Creator: NVD / NIST
Published: 2020-08-07T21:15:10.473+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.68%

Last modified Jun 17, 2026

CVE-2020-15479 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An issue was discovered in PassMark BurnInTest through 9.1, OSForensics through 7.1, and PerformanceTest through 10. The driver's IOCTL request handler attempts to copy the input buffer onto the stack without checking its size and can cause a buffer overflow. EPSS estimates a 0.68% chance of exploitation in the next 30 days.

Description

An issue was discovered in PassMark BurnInTest through 9.1, OSForensics through 7.1, and PerformanceTest through 10. The driver's IOCTL request handler attempts to copy the input buffer onto the stack without checking its size and can cause a buffer overflow. This could lead to arbitrary Ring-0 code execution and escalation of privileges. This affects DirectIo32.sys and DirectIo64.sys.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.68%

47.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Passmark	Burnintest	<= 9.1
Passmark	Osforensics	<= 7.1
Passmark	Performancetest	<= 10.0

References

https://github.com/eset/vulnerability-disclosuresThird Party Advisory
https://github.com/eset/vulnerability-disclosures/blob/master/CVE-2020-15479/CVE-2020-15479.mdExploit, Third Party Advisory
https://www.passmark.com/forum/index.phpVendor Advisory
https://www.passmark.com/support/index.phpVendor Advisory
https://github.com/eset/vulnerability-disclosuresThird Party Advisory
https://github.com/eset/vulnerability-disclosures/blob/master/CVE-2020-15479/CVE-2020-15479.mdExploit, Third Party Advisory
https://www.passmark.com/forum/index.phpVendor Advisory
https://www.passmark.com/support/index.phpVendor Advisory

Timeline

Published: Aug 7, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-15479?

How severe is CVE-2020-15479?

CVE-2020-15479 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.68% probability of exploitation in the next 30 days.

How do I fix CVE-2020-15479?

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-2020-15479?

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

Scan your code now

Source: NVD / NIST