CVE-2021-39536

Name: CVE-2021-39536
Creator: NVD / NIST
Published: 2021-09-20T16:15:12.433+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.03%

Last modified Jun 17, 2026

CVE-2021-39536 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An issue was discovered in libxsmm through v1.16.1-93. The JIT code has a heap-based buffer overflow.. EPSS estimates a 1.03% chance of exploitation in the next 30 days.

Description

An issue was discovered in libxsmm through v1.16.1-93. The JIT code has a heap-based buffer overflow.

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

1.03%

59.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Libxsmm Project	Libxsmm	<= 1.16.1

References

https://github.com/hfp/libxsmm/issues/402Exploit, Issue Tracking
https://github.com/hfp/libxsmm/issues/402Exploit, Issue Tracking

Timeline

Published: Sep 20, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-39536?

An issue was discovered in libxsmm through v1.16.1-93. The JIT code has a heap-based buffer overflow.

How severe is CVE-2021-39536?

CVE-2021-39536 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.03% probability of exploitation in the next 30 days.

How do I fix CVE-2021-39536?

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-2021-39536?

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

Scan your code now

Source: NVD / NIST