CVE-2025-2766: 70mai A510 Use of Default Password Authentication Bypass Vulnerability

Routine

HIGH 8.8MITIGATE

CVE-2025-2766 is a high-severity flaw (CVSS 8.8) affecting a510 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

70mai A510 Use of Default Password Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of 70mai A510. Authentication is not required to exploit this vulnerability. The specific flaw exists within the default configuration of user accounts. The configuration contains default password. An attacker can leverage this vulnerability to bypass authentication and ex

Why this priority

High severity

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 71%)
CISA exploited list	No
Weakness	CWE-1393
Published	2025-06-06
Last modified	2026-06-17

Publisher (CNA): Zero Day Initiative · Vendor: 70mai

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

Am I affected?

Timeline

2025-06-06 19:15 UTCPublished CVE record published
2026-06-17 09:07 UTCUpdated Record last modified

70mai a510 firmware MITIGATE

Affected: 1.0.40ww.2024.04.19

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.40ww.2024.04.19

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-2025-2766?

a510 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-2766 being exploited?

CVE-2025-2766 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-2025-2766 affect?

CVE-2025-2766 affects a510 firmware. Severity is high (CVSS 8.8). 70mai A510 Use of Default Password Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of 70mai A510. Authentication is not required to exploit this vu

How urgent is CVE-2025-2766?

Priority 38/100. High severity

References

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