PatchTheCVECVE-2021-29255: MicroSeven MYM71080i-B 2.0.5 through 2.0.20 devices send admin credentials in cleartext to pnp.microseven.com
CVE-2021-29255 is a high-severity flaw (CVSS 7.5) affecting mym71080i-b firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
MicroSeven MYM71080i-B 2.0.5 through 2.0.20 devices send admin credentials in cleartext to pnp.microseven.com TCP port 7007. An attacker on the same network as the device can capture these credentials.
Why this priority
- High severity
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Adjacent network |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.6% (top 53%) |
| CISA exploited list | No |
| Weakness | CWE-522 |
| Published | 2021-03-26 |
| 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-2021-29255?
mym71080i-b firmware: upgrade to newer than 2.0.20. Exact commands for each OS are on this page.
Is CVE-2021-29255 being exploited?
CVE-2021-29255 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-2021-29255 affect?
CVE-2021-29255 affects mym71080i-b firmware. Severity is high (CVSS 7.5). MicroSeven MYM71080i-B 2.0.5 through 2.0.20 devices send admin credentials in cleartext to pnp.microseven.com TCP port 7007. An attacker on the same network as the device can capture these credentials.
How urgent is CVE-2021-29255?
Priority 43/100. High severity; Public exploit reference