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CVE-2021-44124: Hiby Music Hiby OS R3 Pro 1.5 and 1.6 is vulnerable to Directory Traversal

56
This week
HIGH 7.5REMOTEMITIGATE

CVE-2021-44124 is a high-severity flaw (CVSS 7.5) affecting r3 pro firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Hiby Music Hiby OS R3 Pro 1.5 and 1.6 is vulnerable to Directory Traversal. The HTTP Server does not have enough input data sanitization when shown data from SD Card, an attacker can navigate through the device's File System over HTTP.

Why this priority

  • High severity
  • Public exploit reference
  • Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score7.5 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance1.9% (top 21%)
CISA exploited listNo
WeaknessCWE-22
Published2022-03-28
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: hiby

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

hiby r3 pro firmware MITIGATE
Affected: 1.5 · 1.6
Fixed in: no fixed release known
Safe to downgrade to: a release before 1.5
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official source NVD · CVE Program · Report a problem with this page
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-2021-44124?

r3 pro firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-44124 being exploited?

CVE-2021-44124 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-2021-44124 affect?

CVE-2021-44124 affects r3 pro firmware. Severity is high (CVSS 7.5). Hiby Music Hiby OS R3 Pro 1.5 and 1.6 is vulnerable to Directory Traversal. The HTTP Server does not have enough input data sanitization when shown data from SD Card, an attacker can navigate through the device's File System over HTTP.

How urgent is CVE-2021-44124?

Priority 56/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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