What is CVE-2021-3548?

CVE-2021-3548 is a high-severity vulnerability in Dmg2img Project, classified under Out-of-bounds Read. CVSS score: 7.1/10. Published 2021-05-26.

How severe is CVE-2021-3548?

High severity. CVSS v3 base score is 7.1 out of 10.

Is CVE-2021-3548 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Out-of-bounds Read in Dmg2img Project

CVE-2021-3548

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.

Vulnerability class: Buffer Overflow

Published 2021-05-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H.

EPSS exploit prediction

EPSS: 0.009 (58.6th percentile), scored 2026-10-07.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Dmg2img Project
Dmg2img — versions dmg2img through 20170502

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

Public proof-of-concept exploits

seviezhou/Kraken

References

bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2021-3548?: CVE-2021-3548 is a high-severity vulnerability in Dmg2img Project, classified under Out-of-bounds Read. CVSS score: 7.1/10. Published 2021-05-26.
How severe is CVE-2021-3548?: High severity. CVSS v3 base score is 7.1 out of 10.
Is CVE-2021-3548 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.