PatchTheCVECVE-2021-3548: A flaw was found in dmg2img through 20170502
CVE-2021-3548 is a high-severity flaw (CVSS 7.1) affecting dmg2img. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- High severity
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.1 (High) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 1.0% (top 38%) |
| CISA exploited list | No |
| Weakness | CWE-125 |
| Published | 2021-05-26 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-3548?
dmg2img: upgrade to newer than 20170502. Exact commands for each OS are on this page.
Is CVE-2021-3548 being exploited?
CVE-2021-3548 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-3548 affect?
CVE-2021-3548 affects dmg2img. Severity is high (CVSS 7.1). 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 cha
How urgent is CVE-2021-3548?
Priority 40/100. High severity
Related CVEs
- CVE-2021-32614 HIGH 7.1 UPGRADE A flaw was found in dmg2img through 20170502