PatchTheCVECVE-2023-30024: The MagicJack device, a VoIP solution for internet phone calls, contains a hidden NAND flash memory partition
CVE-2023-30024 is a medium-severity flaw (CVSS 6.6) affecting a921 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The MagicJack device, a VoIP solution for internet phone calls, contains a hidden NAND flash memory partition allowing unauthorized read/write access. Attackers can exploit this by replacing the original software with a malicious version, leading to ransomware deployment on the host computer. Affected devices have firmware versions prior to magicJack A921 USB Phone Jack Rev 3.0 V1.4.
Why this priority
- Public exploit reference
No fix is published yet: follow the downgrade or mitigation steps.
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-2023-30024?
a921 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2023-30024 being exploited?
CVE-2023-30024 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-2023-30024 affect?
CVE-2023-30024 affects a921 firmware. Severity is medium (CVSS 6.6). The MagicJack device, a VoIP solution for internet phone calls, contains a hidden NAND flash memory partition allowing unauthorized read/write access. Attackers can exploit this by replacing the original software with a malicious version, l
How urgent is CVE-2023-30024?
Priority 38/100. Public exploit reference