CVE-2021-3548

Name: CVE-2021-3548
Creator: NVD / NIST
Published: 2021-05-26T21:15:08.31+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.1/10EPSS 0.91%

Last modified Jun 17, 2026

CVE-2021-3548 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. A flaw was found in dmg2img through 20170502. dmg2img did not validate the size of the read buffer during memcpy() inside the main() function. EPSS estimates a 0.91% chance of exploitation in the next 30 days.

Description

A flaw was found in dmg2img through 20170502. dmg2img did not validate the size of the read buffer during memcpy() inside the main() function. This possibly leads to memory layout information leaking in the data. This might be used in a chain of vulnerability in order to reach code execution.

Metrics

CVSS 3.1

7.1/10

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

EPSS Probability

0.91%

55.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Dmg2img Project	Dmg2img	<= 20170502

References

https://bugzilla.redhat.com/show_bug.cgi?id=1959585Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1959585Issue Tracking, Third Party Advisory

Timeline

Published: May 26, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3548?

How severe is CVE-2021-3548?

CVE-2021-3548 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.91% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3548?

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-2021-3548?

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

Scan your code now

Source: NVD / NIST